语法词汇练习 语法大全 语法详解 英语听力 
The policeman is still not sure ______ the young man killed himself or was killed.
#56983
A
if
B
that
C
whether
D
weather
下一题
推荐题目
Do you know the young lady _____ your mother is talking?
#55573
A
who
B
whom
C
with whom
D
which
We can talk with friends on the Internet _______ it’s easier and cheaper.
#58260
A
though
B
as
C
or
D
but
 - Could you give me a hand?- Well, please tell me_______ it is first.
#55270
A
which
B
how
C
where
D
what
 He traveled all over the world ______ he had a man-made leg.
#57013
A
if
B
as
C
though
D
because
The game has _______ meaning _______ you do your best to win.
#55523
A
little; unless
B
no; if
C
a; until
D
no; whether