Many scientists believe that the universe began with an enormous explosion called the “Big Bang”, ______ happened about 13.7 billion years ago.
#77065
A
that
B
which
C
when
D
what
推荐题目
Last week, I bought an interesting story book, _____ is very beautiful.
#76153
A
which cover.
B
the cover of which.
C
its cover.
D
the cover of whose.
I walked up to the top of the hill with my friends, _____ we enjoyed a lovely view of the lake.
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A
which
B
where
C
who
D
that
China’s population is expected to increase to about 1.5 billion in 2040, _____ it will start to decline slowly.
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A
where
B
which
C
after which
D
on which
Eventually I reached the point _____ I was beginning to enjoy my work.
#77862
A
where
B
when
C
that
D
which
It is said that this is the biggest lab ________ they have ever built in their school.
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A
which
B
what
C
不填
D
where