—Who’s that over there, Is it Jane?—No, It ________ be Jane. She is ill in hospital today.
[11·阜康中考]—What’s your father? —_________
Here is _________ for you _________ a waiter.
When you are in trouble(麻烦), you can _________ help _________ the police.
Don’t _________ shorts in the classroom.
The teacher wants his students _________ hard.