______ 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
---What is our earth like ________from the moon?
---Well, our earth, with water ________ 70% of its surface, appears as a "blue ball".
A. seen; covering B. seen; to cover
C. seeing; covered D. seeing; covering
