Questions and exercises are given by the computer, which decides ______ to move the students ahead, review an easier level, ____ give more work on the same level.
#80118
A
either, or
B
both, and .
C
whether, or
D
not only, but also
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–It’s a long time ___ I last saw you. --Yes, and it will be two months ______ we can meet again.
#32862
A
before; since
B
when; before
C
since; when
D
since ; before
—My son is addicted to drugs. He isn’t hopeless, is he?—Yes, _____ he mends his ways and starts all over.
#31505
A
if
B
when
C
even if
D
unless
—Why are you staring at me?—You look stupid! The way you wear is ______ annoys me most.
#32253
A
what
B
where
C
how
D
which