用所给词的适当形式填空。

1. My sister is a _____________ (dance), she _____________ well.

2. Does the woman _____________ (do) some _____________ (clean) in the evening?

3. The old men work on a farm , they are _____________ (farm).

4. Miss Li is a _____________ (sing), she often _____________ in English.

5. My mother is a _____________ (write), she _____________ books at home.

6. Marie Curie is a famous _____________ (science).

27岁初产妇，临产14小时，宫缩40秒／2～3分，胎心100次／分， * * 检查宫口开全，膜破，枕左前位，儿头S+2，羊水黄绿，最合适的处理方法是（）

A.剖宫产

B.等待自然分娩

C.缩宫素静脉点滴催产

D.产钳助产

E.注意听胎心