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--- I think the environment is becoming worse and worse.--- Yes, I really don’t know we can do about it.
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which
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whether
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that
D
what
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Our teacher makes good use of any time______ he can spare.
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which
B
that
C
when
D
in which
I'd like to work with          is honest and easy to get on with.
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who
B
whoever
C
whomever
D
no matter who
He has three children,         are doctors.
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and two of whom
B
two of them
C
two of whom
D
two of which
The Red Cross goes into areas _______ help is badly needed.
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why
B
which
C
where
D
that
--Do you remember ____ he came? --Yes, I do.He came by car.
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when
B
if
C
how
D
that