He made another wonderful discovery, ______ of great importance to science.
#93713
A
which I think is
B
which I think it is
C
which I think
D
I think which is
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If ________, please pay a visit to me and have a further discussion of the issue.
#92250
A
you are convenient
B
it is convenient
C
it at your convenience
D
it is convenience
_______ the smoke come out of the building, my first thought was to call the fire department as soon as possible.
#92680
A
Having seen
B
When seeing
C
When I saw
D
Seeing
He hasn’t slept at all for three days. _____ he is tired out.
#93202
A
here is no point
B
here is no need
C
t is no wonder
D
t is no way
--- Have you finished the book? --- No, I’ve read up to _______ the children discover the secret cave.
#93743
A
in which
B
what
C
that
D
where