根据句意用所给动词的适当形式填空，必要时可加情态动词。

1．Peter ________（come）here tomorrow，but I'm not quite sure．

2．________people ________（use）money in 100 years?

3．--What were you doing when the UFO took oft?

--I ________（watch）．

4．Thank you so much for ________（invite）me．

5．You ________（have）your lunch already，haven't you?

6．I ________（not see）my aunt for a long time

7．If you work hard enough，you'll find a good way ________（learn）English better．

8．--Have you ever been to Qingdao?

--Yes．And I ________（stay）there for half a month．

9．--Who usually ________（wash）the dishes in your home?

--My mother does．

10．He asked whether I ________（be）interested in English．