Students are required to go out in couples, especially in the evenings, with friends ______ they get into trouble.
#30775
A
even if
B
if only
C
in case
D
when
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I doubted her honesty________I met her.
#30062
A
first time
B
for the first time
C
the first time
D
by the first time
Exactly______ the potato was introduced into Europe is uncertain, but it was probably around 1565.
#30010
A
whether
B
why
C
when
D
how
A good friend of mine from I was born showed up at my home right before I left for Beijing．
#80680
A
how
B
whom
C
when
D
which