【推荐1】The girl had to quit ______ (learn) painting because her parents couldn’t pay the fee for her.

【推荐2】We ________ (learn) about 4,000 English words by the end of last term. (所给词的适当形式填空)

【推荐3】We have fun ______ (learn) English.As a result, we have made rapid progress. (所给词的适当形式填空)

【推荐1】阅读下面十个句子, 在空白处填入1个适当的词或括号内单词的正确形式。
1. I was excited _____________ (meet) my friend at the top of the Mount Huang.
2. Grace is always full of ideas, but _____________is useful to my knowledge.
3. We hope that you can put the plan _____________ practice.
4. Is that the hospital _____________ you had your operation?
5. For most of the day he can still be found ____________(work) somewhere in the plant.
6. Please deliver the goods at your earliest ____________(convenient).
7. When a baby koala is born, it will be no ____________(big) than a bee.
8. You were silly not ____________(lock) your car.
9. She was sitting there with her attention_____________(focus) on her novel.
10. When he came back to life，he found himself lying on the floor, with his hands __________ (tie).

【推荐2】Modern methods of tracking polar bear populations have been employed only since the mid-1980s, and are expensive ______ (perform) consistently over a large area. （用单词适当形式填空）

【推荐3】I often miss Jack, an old friend of mine, who everyone thinks is pleasant to get along________. （用所给词的适当形式填空）