I really miss my American friend Nick. It's nearly four years _____we last meet.
#81959
A
that
B
as
C
until
D
since
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Only when I left for America ____________ how much I missed my parents.
#83247
A
I realized
B
did I realize
C
I had realized
D
had I realized
Only after my friend came ____.
#82423
A
did the computer repair
B
he repaired the computer
C
was the computer repaired
D
the computer was repaired
Only when___________ according to the directions can the medicine be quite effective.
#80195
A
taking
B
taken
C
being taken
D
having been taken
Tom doesn’t want to take part in any school activities,________.
#84199
A
and David doesn’t too
B
and David doesn’t either
C
and so doesn’t David
D
and either does David
Generally speaking_______acording to theinstructions，the drug has no side effect.
#79957
A
when taking
B
when taken
C
when to take
D
when to be taken