He is a key ____________ in the murder so we must protect him from all kinds of danger.
#34297
A
witch
B
watcher
C
wizard
D
witness
推荐题目
Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ___________ aims to provide better service to travelers from outside the city.
#33504
A
where
B
that
C
which
D
it
After three years of preparation for the 2011 Xi’an International Horticultural Expo (西安园博)会），the city is presenting the world______ many people think is the green Special Olympics．
#32980
A
that
B
which
C
what
D
where
How long do you think it will be ______ the Chinese people land on the moon?
#34769
A
that
B
since
C
until
D
before
It remains to be seen ________ this plan is practical enough to keep the project going.
#30340
A
whether
B
how
C
where
D
when