根据句意用所给动词的适当形式填空。
小题1:How do you like our city? Wonderful. I ___(stay) here for another two days.
小题2:Everyone in our class except the twins ____ (hope) to visit the Great Wall.
小题3:He won’t go camping next week because he is busy ______( study) for exams.
小题4:No smoking here . Oh, sorry. I ______ ( not see ) the sign.
小题5:I think every one of them ________(solve) the maths problem at the moment.
小题6:The people in the northern part of China often make fires ____ (keep) warm.
小题7:Could you tell me when ______ (leave) for New York?
小题8:If you ______(not be ) careful, you will make mistakes.
小题9:There ______( be) an interesting film tonight, is there?
小题10:Look! There is a wallet _______ (lie) on the ground.