John has two brothers， but either ____out of work now.
A. are
B. is
C. have
D. has
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The police ____the murderer everywhere when he suddenly appeared in a theatre.
A. is searching for
B. were searching for
C. are searching for
D. were searching
Apples of this kind ____.
A. tastes good
B. tastes well
C. taste good
D. taste well
Your trousers ____dirty， you must have _____washed.
A. is；it
B. are；them
C. are；it
D. is；them
Where ____rubbish， there are flies.
A. there are
B. there is
C. is
D. there has
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