用“be动词”或“助动词”的适当形式填空：
1.It a quarter to ten .We having an English lesson.
2.They my parents .They doctors.
3.It Sunday morning.It sunny.
4.it often rain in spring?No ,it
5.you from the USA?Yes,I .
6.What Miss Li doing now?
7.you often play football together?No,we .
8.What Su Yang and her sister do at the weekends?
9.there any apples in the bag Yes,there .
10.he like singing Yes ,he .
11.There a pencil-box and some books in the desk.
12.quiet ,please.
13.climb the tree .
14.I’ll a goalkeeper.
15.you at home last night No ,I .
16.Mike go shopping this No ,he .
17.there a lot of snow in winter?No ,there .
18.you feel tired?Yes,we .
19.the ball here just now No ,it .
20.we going to see a play this weekend?Yes ,we