1. 用所给词的适当形式填空

1. （1） Hi，Jim! Do you hear someone (sing)in the next room?
3. （2） Why don't we (have)a picnic next weekend?
5. （3） Let's (not wait)any more．There's little time left．
7. （4） They don't allow people (talk)loudly here．
9. （5） She could (hard)see anything because there is almost no light in the room.