【推荐1】语法填空
1. While they are rare north of 88°,there is evidence ________ they range all the way across the Arctic, and as far south as James Bay in Canada.
2. What students do at college seems to matter much more than _______ they go.
3. As natural architects, the Pueblo Indians figured out exactly____thick the adobe walls needed to be to make the cycle work on most days.
4. Success partially depends on ________ you have the patience to do simple things perfectly．
5. I lost my cell phone yesterday． Can you tell me ________ I can buy one?
6. It never occurred to me ________ you could succeed in persuading him to change his mind．
7. ________ breaks the law will be punished．
8. She will give ________ needs help a warm support．
9. I have no idea ________ the girl is doing in her room now．
10. ________ is well known to everyone, I should say, is that a man becomes learned by asking questions．
11. Exactly ________ the potato was introduced into Europe is uncertain, but it was probably around 1565．
12. It shocked the world ________ the United States withdrew from some major agreements it had       been committed to, including the 2015 Paris Agreement on climate change and the 2015 Iran Nuclear Deal．
13. I need help now! I have to fix a leaking pipe in my bathroom but I'm not sure ________ to begin．
14. Forty grams of meat per day is ________ people should consume in order to stay fit．
15. The famous player tried again and again after each failure． That's ________ he succeeded at last．

【推荐2】________ my dear teacher couldn't understand was ________ fewer and fewer middle school students showed interest in her lessons.

【推荐3】单句语法填空
1. I looked out the window of the bus and dreamed about __________ we would do while on our trip.
2. I really don’t know __________ she gets by on such a modest salary.
3. Save your apology for __________ you really make everything a mess.
4. That preserved historic village connected to downtown by a highway is __________ many office workers spend their weekends.
5. It is generally believed that communication skills are becoming __________ it takes to be a good doctor.
6. __________we used to see as something impossible is now becoming a reality.
7. All the mistakes I ever made in my life were __________ I wanted to say “No” and said “Yes”.
8. In the opening four sentences, Du described __________ the cycles of nature happen — the leaves come back to the trees, the flowers bloom, and the grass grows tall.
9. —Could you give me some advice on getting a job?
—First, find out __________ you like doing best．
10. My mother knew where we were at all times．She knew ________ our friends were．
11. I had no idea __________ a stage manager actually did．
12. The problem is __________ we can improve our reading skills in such a short time．
13. What is concerning us greatly is ________the workers held up in that area yesterday will be set free．
14. The practical suggestion came from the representatives ________ the new rule be adopted．
15. __________ is the most important to him is not his job, but his family．
16. His success in digital field proved __________ it took to be a best CEO．
17. Built over 2,200 years ago in __________ is now Sichuan Province in Southwest China, this amazing engineering achievement is still used today．
18. In Japan, it is recognized that the best communication is __________ you don't speak at all．
19. I’d like to start my own business—that’s __________ I‘d do if I had money．
20. Today, people still come and go—to see __________ the Canadian gold rush happened．