Robots _______ do housework instead of people in the future.
| A．will be able to | B．will can |
| C．could | D．were able to |
—Do you know the song Come on，Haixi？
—Yes，and I ________ sing it well．
A．must
B．can
C．need
John can play ________ guitar，but he can’t play ________ chess．
A．the；／
B．／；the
C．the；the
________ you dance？We need some more actors for the talent show．
| A．Need |
| B．Shall |
| C．Must |
| D．Can |
—Shall we go ________ on Sunday？I love water sports．
—That’s a good idea．
| A．hiking |
| B．swimming |
| C．cycling |
| D．skating |
He lost his key．It made him ________ in the cold to wait for his wife’s return．
| A．to stay |
| B．stayed |
| C．stays |
| D．stay |