“I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”
| A．must be | B．must have been |
| C．might be | D．can have been |
You can’t imagine the difficulty he _____ onto the cliff and saving the boy in trouble.
| A．had to climb | B．had climbed | C．had climbing | D．had on climbing |
_____ this house with that one, you’ll find this house is better.
| A．Compared | B．To compare | C．Comparing | D．When compared |
Our bodies are strengthened by taking exercise. ______, our minds are developed by learning.
| A．Probably | B．Likely | C．Similarly | D．Generally |
The whole village was _____ by the rainstorm.
| A．knocked down | B．knocked out | C．knocked at | D．knocked off |
--- I’m sure Andrew will win the first prize in the final.
--- I think so. He _____ for it for months.
| A．is preparing | B．was preparing | C．had been preparing | D．has been preparing |