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
推荐题目
He failed in the exam not only his laziness but also he didn’t listen to the teacher.
#31866
A
because; for
B
because of; because
C
as; for
D
for; since
How did you manage to get to school on time ______ you missed the school bus?
#79910
A
when
B
if
C
once
D
because
______ he did not want to, he still had to share his hotel room with a stranger.
#34220
A
Because
B
Even though
C
When
D
As if
-----“How long have you stayed in this hotel?”----- “Not long, just ______ this Monday.”
#80015
A
on
B
since
C
until
D
after