Ⅰ.用所给动词的正确形式填空
1．They are_playing (play) football in the park after school.
2．You are always doing (do) well.
3．—When are you going (go) off to Guangzhou?
—Next Friday morning.
4．Whenever I visit him, he is_working (work) in his lab.
5．I hear all the hotels are very crowded. Where are you staying (stay) in Shanghai?
6．It is half past eight now, so they are_having (have) their supper in a restaurant.
7．Ladies and gentlemen, please fasten your seat belts. The plane is_taking (take) off.
8．Our train leaves (leave) an hour later, so we don't have to hurry.
