[ Grammar - Present Perfect with for and since ]
Anthony hasn’t called me _________ two hours, there must be a problem.
A. for
B. already
C. since
D. when

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Grammar › ViewWhen you write your essay you ……… copy ideas from books without referencing them properly.
A. musn’t
B. don’t have to
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The singer ended the concert …… her most popular song.
A. by
B. with
C. in
D. as