The _____ of the trees in the water was very clear.
| A．mirror | B．sight | C．reflection | D．shadow |
What a kind teacher. But for his help, I __________ my study.
| A．wouldn’t finish | B．wouldn’t have finished |
| C．shouldn’t have finished | D．mustn’t have finished |
He seems too tired today, and I wonder _________ he got a good sleep last night.
| A．when | B．that | C．if | D．where |
I ____________ you not to move my dictionary—now I can’t find it.
| A．asked | B．ask | C．was asking | D．had asked |
Math is ___________ me. I can never get high grades.
| A．over | B．beyond | C．below | D．behind |
-The window is dirty.
-I know. It ___________ for weeks.
| A．hasn’t cleaned | B．didn’t clean | C．wasn’t cleaned | D．hasn’t been cleaned |