--What are you going to do tomorrow?--We’ll go to the library tomorrow if it _____.
A. isn’t rain
B. rain
C. won’t rain
D. doesn’t rain
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Sam didn't seem too disappointed at losing. _____ anything, he seemed relieved that it was all over.
A. Unless
B. If
C. While
D. Though
_____ I believe it is true, I cannot prove it.
A. Because
B. When
C. While
D. Whereas
Many accidents ______ by careless drivers last year.
A. are caused
B. were caused
C. was caused
D. caused
The house ________ since the Greens left for Japan.
A. hasn’t cleaned
B. weren't cleaned
C. hasn't been cleaned
D. wouldn't been cleaned
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