(2013·重庆模拟)—When did your brother begin to show his interest in medicine? —It was a Saturday he noticed his classmate experimenting on a frog in the lab.
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that
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what
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when
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which
推荐题目
The local TV program Kankankan(看看看) can often help solve problems and draw attention to situations_______ help is needed.
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that
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whose
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where
D
which
There was a tree in front of the house, ___ owner was seen sitting under it, enjoying the shade.
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whose
B
where
C
which
D
that
We’ve booked a room in the centre of town for the guests _____ they can stay for three days.
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when
B
whom
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which
D
where