___________ caused the accident is still a complete mystery.
#73942
A
What
B
That
C
How
D
Where
推荐题目
_____ is known to everybody, the moon travels round the earth once every month.
#71901
A
It
B
As
C
That
D
What
The old house, in front of ________ there is an apple tree, is ________ I used to live.
#73349
A
that, the place
B
it, the place
C
which, where
D
what, where
After three hours’ climbing , they reached _____they thought was the place they’d been dreaming of .
#73010
A
what
B
which
C
where
D
that
I’m not sure whether this is the book ______ my brother read the year before last.
#69513
A
whose
B
as
C
what
D
which