The surroundings of his house ______ clean now.
A. is
B. are
C. was
D. were
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Thepublic ______ generous in their contributions to the earthquake victims.
A. is
B. was
C. are
D. has been
Cattle ______ on the hillside.
A. grazes
B. is grazing
C. was grazing
D. were grazing
Her politics ______ neither conservative nor liberal.
A. is
B. are
C. was
D. has been
Measles ______ a kind of infectious illness.
A. is
B. are
C. were
D. have been