It was in 1990 ______ the medicine was tested on human patients.
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A
since
B
that
C
before
D
when
推荐题目
“How was ______ they discovered the entrance to the underground palace?” “Totally by chance.”
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A
it that
B
he that
C
it when
D
he which
Why! I have nothing to confess._____ you want me to say?
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A
What is it that
B
What it is that
C
How is it that
D
How it is that
It was along the Mississippi River ________ Mark Twain spent much of his childhood.
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A
how
B
which
C
that
D
where
----- It was at that moment_________ her appointment with the doctor.
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A
when she remembered
B
that she remembered
C
did she remember
D
and she remembered