—Was his father very strict with him when he was at school?—Yes, he had never praised him _______ he became one of the top students in his grade. 
#74587
A
after
B
unless
C
until
D
when
推荐题目
 There were two boys in the lab,       did the experiment successfully.
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A
the clever of whom
B
the cleverer or whom
C
the clever of them
D
the more clever of them
If it ______ tomorrow, I’ll go hiking with my friends.
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A
won’t rain
B
will rain
C
doesn’t rain
D
rains