Doctors have been researching      effect stand-up and other forms of comedy have on us.
#78880
A
which
B
what
C
whatever
D
whichever
推荐题目
--Could you tell me _______? --Next week.
#39216
A
when John will come back
B
when will John come back
C
when John came back
D
when did John come back
---Do you know how long ________?  ----I’m sorry I don’t know.
#36739
A
he has come here
B
has he been married
C
Tom has bought the car
D
his uncle has been abroad
 ---Could you tell me _________?---You can take the No. 1 bus. 
#36784
A
how can we get to Xingyi Airport
B
how we can get to Xingyi Airport
C
how do we get to Xingyi Airport
D
how we got to Xingyi Airport