(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
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This is the biggest lab__________we have ever built in our university.
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which
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what
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that
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Where
________ I want to know, sir, is whether you have any goods in that bag _______ I should know about.
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What; that
B
What; what
C
That; what
D
That; where
Recently our community has launched a campaign among all the residents , ____ we are called upon to do our little but to prevent the worsening environment.
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where
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which
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as
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when
— Where did you get robbed of your handbag, Madam?— It was at the stop ______ I usually wait for my bus for work.
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that
B
when
C
which
D
where