Nobody can explain the mystery ____ he suddenly disappeared.
#70049
A
why
B
what
C
whether
D
which
推荐题目
A man with a bleeding hand hurried in and asked, “Is there a hospital around ______ I can get some medicine for my wounded hand?”
#73362
A
that
B
which
C
where
D
what
Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.
#72457
A
why
B
that
C
when
D
ours
It is generally believed that teaching is _____ it is a science.
#74559
A
an art much as
B
much an art as
C
as an art much as
D
as much an art as
Hangzhou is one of the most beautiful cities ___ I have ever visited.
#71608
A
that
B
which
C
it
D
where