---Listen! Someone is knocking at the door. Who _____it be?
---It _____be Tom. He phoned to visit me this evening.
| A．may; may | B．may; shouldn’t | C．must; can | D．can; may |
Have you read the book _____ is about the moon?
| A．what | B．it | C．/ | D．which |
Jack still came to school _____he was ill.
A though B hotC. if D. so
We want to know _____to help them.
| A．what can we do | B．whatwecan do | C．how can we do | D．how we can do |
I want to watch the basketball match. Would you please ______ the TV?
| A．turn on | B．turn off | C．turndown | D．turn up |
Echo _____ for half a month. She’ll come hack in two months.
A. left B leaveC. has left D. has been away