Someone called me up in the middle of the night, but they hang up ________ I could answer the phone.
—Did you visit the museum today?
—No. We _____ it, but we spent too much time shopping.
| A．could have visited | B．must have visited |
| C．could visit | D．must visit |
I would appreciate ______ very much if you could change the plan a bit to make it more workable.
| A．that | B．this | C．it | D．you |
He didn’t make____clear when and where the meeting would be held.
| A．this | B．that | C．it | D．these |
Please ______ the mistakes in my composition.
| A．point to | B．point out | C．point at | D．point |
--- Are you pleased with what he has done?
--- Not in the least. It couldn’t be __________.
| A．so bad | B．much better | C．any worse | D．the best |