Although the police thought he was the most likely one, _____ they had no exact proof about it, they could not arrest him.
| A．when | B．until | C．before | D．since |
He always tell ____ lies, to tell you ____ truth, I don’t believe what he said at all.
| A．/; / | B．the; the | C．/; the | D．the; / |
When we were young, every evening my brother and I ______ stay at home waiting for my mother?
| A．might | B．would | C．should | D．could |
—Are you satisfied with what he did?
—No. It couldn’t have been _____.
| A．worse | B．better | C．so bad | D．the worst |
This year __________ to be another good one for harvests.
| A．tells | B．means | C．promises | D．intends |
Perhaps it is true that nobody in the world knows exactly how the earth __________.
| A．came up | B．came out | C．came to power | D．came into being |