单项选择题

Study English hard, ______ you'll fail the exam.

A． or
B． so
C． and
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单项选择题
Mary usually ______ a shower at 6 in the morning, but this morning she shower at 6:30
A． takes, taked
B． takes, takes
C． takes, took
单项选择题
Don't make so ______! I can't hear the news.
A． much noise
B． many noise
C． many sound
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