1.   This could be Robert's basketball.(对画线部分提问）

__________basketball__________ this be?

5.  昨天晚上可能是我们的老师关的灯。

It________  _________ our teacher who turned off the light last night.

4.  今天我跟朋友们打篮球很开心。

I_________  ________  ________ basketball with my friends today.

3.   你有不寻常的事要告诉我吗？

Do you have__________  ________ to tell me?

2.   农场里或许有一些人在摘苹果。

________  __________  _______ some people__________ apples on the farm

1.   你困了就去睡吧。

Go to bed if you_________  __________ .

5.  The little boy was thinking of ______________ (make) another model plane.

4.  The red bike must be___________ (Mary).

3.    Look! The boy is crying. He might be ______ (look) for his mother.

2.    It used_________ (be) poor here.