The children ________ lost in the woods;otherwise,they would have been at the lakeside camp as scheduled.
| A．must have got |
| B．must get |
| C．should have got |
| D．should get |
I’ll come after the meeting if time ______.
| A．permits | B．is permitting |
| C．is permitted | D．has permitted |
New medicines and instruments ______ every day to extend life.
| A．develop | B．are being developed |
| C．are developing | D．have developed |
What I wanted to know was when and where the meeting ______.
| A．was holding | B．had held |
| C．was to hold | D．was to be held |
If you go there alone after dark you might get _____.
A. attacked and robbed B. attacking and robbing
B. to attack and rob D. to be attacked and robbed
A red sky in the morning _____ to be a sign of bad weather.
| A．says | B．is saying |
| C．has said | D．is said |