用括号内单词的适当形式填空。

1.  He goes to visit his grandparents _________(two)a month.

2.   _________(luck), he passed the math exam.

3.  She is an _________(America) girl.

4. - How much salt do you need?

   - Two _________(teaspoon)is enough.

5. Yesterday Mrs. Lambert _________(hiccup) for half an hour.

6.  The writer gets lots of letters from the _________(read) every day.

7. The white shirt may be Kate's. _________(I) is yellow.

8.  Guangdong Province is in the _________(south) part of China.

9. Be _________(care) when you cross the street.

10.  The weather in Shanghai is _________(difference) from that in Beijing