Some of my friends are interested in science, but none of them can tell ____________.
#36924
A
when UFOs appear next time
B
if horses know the way or not
C
where was this kind of plant found
D
how elephants communicate
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We don’t know ______, maybe in the afternoon.
#37715
A
why will we start
B
how we will start it
C
when we will start
D
where we will go
—Do you know_______?—Yes. At about twelve. I was just about to go to bed. 
#39113
A
when he came back
B
when he will come back
C
when did you go to bed
D
whether he goes to bed late
 --Could you tell me ___________?   –I don’t know. Maybe at 8:00pm.
#37556
A
when will the meeting start
B
when the meeting will start
C
the meeting will start when
D
the meeting when will start
—Could you please tell me       ?—Sorry, you can turn to Mr. Lee for help.
#39196
A
how long can man live without water
B
whether Yao Ming would play for Rockets or not
C
how I can keep myself safe from the flu
D
why did a serious landslide happen in Zhouqu, Gansu Province 