Helen is on time for everything. How ______ it be that she was late for such an important interview?
A
. might B. can C. must D. may
The situation is getting worse. We must __________ the trouble _____________.
| A．keep; spreading | B．prevent; spreading |
| C．stop; to spread | D．protect; to spread |
___________ was no doubt __________ someone had broken into the store the day before.
| A．There; that | B．There; whether | C．It; that | D．It; whether |
You __________ have told him my comment on him. Now, he is very angry with me.
| A．needn’t | B．couldn’t | C．shouldn’t | D．mustn’t |
--- I wonder if I could use your camera this afternoon.
--- ________________. I’m not using it recently.
| A．Sure, go ahead. | B．I would rather you do. |
| C．Yes, indeed. | D．Why not borrow? |
— I’m afraid what I did cannot satisfy your requirements.
— _____. At least you tried.
| A．I don’t believe it. | B．Never mind. |
| C．Don’t say so. | D．It was not your fault. |