Competitors are allowed to take a five-minute break every hour to eat，drink or do ________ is necessary
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A
which
B
that
C
where
D
what
推荐题目
Liu Yang is the first Chinese woman astronaut ______ has ever traveled in space.
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A
whom
B
which
C
who
D
whose
It is not always easy for the general public to see _____use a new invention can be of to their daily life.
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A
which
B
what
C
that
D
whose
6. --- I don’t know ______ I can improve my English. --- You can read some English books and magazines.
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A
why
B
what
C
when
D
how
The doctor came up and asked me _____the day before.
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A
what I had eaten
B
what had I eaten
C
that what I had eaten
D
that what had I eaten