【推荐1】If she ________(know) that he had been in prison, she __________ (not marry) him. (所给词的适当形式填空)

【推荐2】It ________（know）to all that false items and inferiors harm the interests of the consumers. (所给词的适当形式填空)

【推荐3】Not only the students but also the teacher is looking forward to ________ (know) the result of the boy’s disappearance.

【推荐2】Directions: Complete each of the following sentences, using how or a wh-word.
1. She understood ____________lonely his life had been.
2. Hans had no idea____________ the professor was talking about.
3. Proper weight alone doesn't show____________ a diet is lacking in vitamins and minerals.
4. Comic books can be good or bad. It's just a question of ____________they're used.
5. I doubt ____________the player will set a world record or not.
6. The doctor asked the patient ____________was wrong with him
7. Make yourself at home. You may eat ____________you like.
8. She often thinks of ____________she can do more for her students.
9. It's difficult to tell exactly ____________the saying began.
10. I will insist on doing ____________I think is right, however difficult it is.

【推荐3】Before the prohibition of mining started, a series of activities had damaged its ecosystem. However, Wang was optimistic ________ the damage could be repaired. (用适当的词填空)