Many people do not realize the importance of health __________ they have fallen ill.
| A．since | B．until | C．while | D．After |
—Can I borrow your dictionary？
—Yes，you ________．
A．can
B．must
C．should
—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 |