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