按要求改句子。
1. The students often play volleyball.（用now改为现在进行时）
The students __________ __________ volleyball now.
2. The boys are playing football.（改为一般疑问句）
__________ the boys __________ football?
3. The teachers are playing basketball.（对划线部分提问）
__________ are the teachers __________?
4. Are the girls doing the high jump?（作肯定回答）
__________, they __________.
5. they, watching, are, jump, the, long （连词成句）
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