[ Grammar and Punctuation ]
Select the sentence that uses a relative adverb correctly.
A. I know the reason why she left early.
B. I know the reason who she left early.
C. I know the reason whom she left early.
D. I know the reason which she left early.

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Present Perfect › ViewWhich one is correct?
A. Have you never written an e-mail in English?
B. Have you just written an e-mail in English?
C. Have you ever written an e-mail in English?
Subject-Verb Agreement › View
Bread and butter ___ our daily food.
A. Is
B. Are
He ______ attend the workshop if he wanted to improve his skills.
A. has to
B. didn’t have to
C. had to
D. not have to
Preposition › View
Which preposition best completes this sentence? “The keys are __ the table.”
A. in
B. on
C. at
D. by
