【推荐1】It’s ________ (possible) for people to finish the difficult work in such a short time.

【推荐2】The homework was too hard and it was _________ for me to finish it. (possible)

【推荐3】If you don’t work hard, it will be i________ to pass this exam. Because it is a little difficult.

【推荐1】—What did you think of your last hiking?
—Not so bad. The last leg of our trip was the most ________ (累人的).

【推荐2】根据句意及首字母提示完成单词。
1. Don't l ________ to music in the classroom.
2. The twins often f ________ at home. But they are very good with their classmates.
3. I have to p ________ the guitar on Sundays.
4. Your car is d ________. You must clean it.
5. I f ________ happy because my parents often come to see me.

【推荐3】—Let’s play tennis.
—No, it’s b________.

【推荐1】It is dangerous _________ children to swim in the river.

【推荐2】It took us half an hour ________ (find) out the cost by train.

【推荐3】It took us about two hours _________ (arrive) at the top of the mountain.