[ Grammar ]
Ali should…… helpful.
A. am
B. is
C. are
D. be
Select your answer:

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Grammar › ViewMost police officers ______________ uniforms to work. Only detectives in higher positions _____________ their street clothes.
A. wear, wearing
B. are wearing, are wearing
C. are wearing, wear
D. wear, wear
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Even when arrested, he denied ____ cut down that tree.
A. has
B. having
C. have
D. have had
