It is getting late. It’s time we _____.
| A．go | B．went | C．are going | D．must go |
“May I go and play with Dick this afternoon, Mum?” “No, you can’t go out _______ your work is being done.”
| A．before | B．until |
| C．as | D．the moment |
“I’m going to the post office.” “_______ you’re there, can you get me some stamps?”
| A．As | B．While |
| C．Because | D．If |
New medicines and instruments ______ every day to extend life.
| A．develop | B．are being developed |
| C．are developing | D．have developed |
. “Mary looks hot and dry” “So _____ you if you had so high a fever.”
| A．do | B．are |
| C．will | D．would |
What the boy enjoys _____ to have a room of his own.
| A．being | B．to be |
| C．is | D．are |