---Where is Tom? ---I’m not sure. He _________ football on the playground.
| A．could playing | B．must be playing |
| C．might be playing | D．must playing |
-Can you join the ________ club?
-Yes. I can swim very ___________.
| A．swimming; well | B．swim; good | C．swiming, well | D．swims; good |
-Could you help me carry the box?
-__________________.
| A．No, I couldn’t | B．You’re welcome. |
| C．No problem | D．That’s OK. |
Don’t________the window. It’s ________outside.
| A．opening; wind | B．open; windy |
| C．opens; wind | D．to open; windy |
The boy often _________basketball after school. But now he _________piano.
| A．plays; is playing the | B．play the; plays |
| C．is playing the; is playing | D．plays the; is playing |
Where_______ your friend ________?
| A．is; come from | B．do; come from |
| C．are; from | D．does; come from |