用所给词的适当形式填空。

1. I             (not have) a party if I             (not pass) my exam.

2. Your mother            (be) angry if you             (get) home late.

3. If it             (not rain) tomorrow, I             (move) to my uncle's

4. If you put your heart into it,there will be no             (difficult) .

5. Let me             (help) you             (do) it.

6. He will stay at home and watch             (video) this evening.

7. Two             (half) make a whole.

8. She is             (clever) student in our class.

9. They lived             (happy) after that.

10. China is             (fame) for its delicious food.

（）主要用于制造高精度、高寿命、高效率的冲模，如高速冲模具、多工位级进模等。

A、预硬钢

B、硬质合金钢

C、优质碳素工具钢

D、优质碳素结构钢