—Look, the paint is starting to come off ____ the wall is damp.—Well, we'd better have the wall repainted some day.
#31419
A
when
B
where
C
if
D
once
推荐题目
Usually pilots need about a decade of experience _______ they can be promoted to captain.
#31003
A
after
B
before
C
then
D
when
Try your best to help the people when they are in trouble, _______you will feel pleased and happy.
#31495
A
unless
B
or
C
and
D
But
There is no point making complaint of getting low-paid ______ you don’t make any effort at all.
#31257
A
until
B
when
C
once
D
though
We showed great pity to the poor old man, for ________ life was hard in the past.
#31091
A
whom
B
whose
C
who
D
that