He failed in the exam, and I wonder ___ he studied hard in the school.
#80339
A
when
B
that
C
if
D
where
推荐题目
（2014年安徽省合肥市高三第三次教学质量检测）28. Let's take a bus or taxi to the park — ______ you'd prefer to walk.
#30027
A
since
B
in case
C
unless
D
now that
I have been keeping that photo ________ I can see it every day, as it always reminds me of my college days.
#80273
A
which
B
where
C
whether
D
when
He always brings me a pretty gift ____ he comes to visit me.
#33925
A
by the time
B
sometimes
C
every time
D
at times
Sorry I’m so late, but you cannot imagine _______ great trouble I took to find your house.
#30564
A
what
B
how
C
which
D
why