She was so angry at ____ he was doing ___ she walked out without a word.
#38297
A
what…that
B
that…what 
C
that…that  
D
what…what
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—Could you tell me       ?—About two hours.
#38068
A
how long it takes to fly to Guilin
B
how long it took to fly to Guilin
C
how long does it take to fly to Guilin
D
how long did it take to fly to Guilin
 —What time will Mr Brown be back to China?—Sorry. I don’t know ______.
#36648
A
when did he go abroad
B
why he is going abroad
C
how soon will he be back
D
how long he is going to be there
The child asked his mother          go out to play tennis.
#78926
A
that he could
B
if he could
C
whether could he
D
that if he could