----Must I hand in our homework today?
--- No, you ______.
| A．mustn’t | B．needn’t | C．can’t | D．shouldn’t |
— Jane. I can't find Mike in the playground.
—Oh. He ______ the piano in the music room.
| A．is playing | B．was playing |
| C．has played | D．will play |
—Simon. I hear you are going abroad for further study. Have you decided ______?
—Next September.
| A．when going | B．when to go |
| C．how going | D．how to go |
—Dad, shall we go to the World Park tomorrow?
—Sorry. I won’t be free, but you ______ ask Mum to go with you.
| A．must | B．may |
| C．would | D．should |
You won't work out the problem ______ you understand it. So listen to me explain now.
| A．since | B．when |
| C．unless | D．though |
—These drawings are made by the three-year-old girls here.
— Well, ______creative the children are!
| A．very | B．quite |
| C．what | D．how |