— Excuse me, Is this the right way to the Summer Palace ?
— Sorry, I am not sure, but it _______ be.
| A．might | B．will | C．must | D．can |
______ I accept that he is not perfect, I do actually like the person.
| A．While | B．Since | C．Before | D．Unless |
This is a very interesting book. I’ll buy it,__.
| A．how much may it cost | B．no matter how it may cost |
| C．however much it may cost | D．how may it cost |
The two biologists debated ____each other for years ______ the origin of species.
A. with; about B. about; for C. between; over C. to; for
John rushed out in a hurry, ___________ the door ____________.
| A．leaving; unlocked | B．leaving; unlocking |
| C．left; unlocked | D．sang; singing |
Mrs. Brown was much disappointed to see the washing machine she had______went wrong again.
| A．it repair | B．it repaired | C．had repaired | D．to be repaired |