—You___________ stop me.
—Even if you __________it, I won't allow you to swim across the river.
| A．mustn't; dare not do | B．may ; dare not do |
| C．can; dare to do | D．needn't; dare do |
Look! The dictionary , _____is red , is a birthday gift given by Father.
| A．which cover | B．the cover of which | C．the whose cover | D．that the cover |
_________ we can’t understand is ___________ he didn’t join us in our discussion.
| A．That; why | B．What; why | C．That; that | D．What; whether |
He couldn’t ______ the fact that the money was found in his house.
| A．answer for | B．leave for | C．account for | D．care for |
— You look tired!
— Yeah, I ________ basketball since 4 o’clock.
| A．had played | B．have been playing | C．am playing | D．have been played |
He wants to see changes in the company and I am sure he will ______.
| A．on time | B．at a time | C．at one time | D．in time |