His writing is so confusing that it's difficult to make out ________ it is he is trying to express.(2011·安徽，33)
#78806
A
that
B
how
C
who
D
what
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Competitors are allowed to take a five-minute break every hour to eat，drink or do ________ is necessary
#79032
A
which
B
that
C
where
D
what
— Do you know ______ for New York last night? — At 9:00.
#38564
A
what time he leaves
B
what time he left
C
what time does he leave
D
what time did he leave
My teacher insisted that we ______ the phrases.
#79158
A
remembered
B
would remember
C
should remember
D
had remembered
Do you know what ______?
#37308
A
his favourite song is
B
is his favourite song
C
his favourite song
D
his most favourite song is