Scientists say it will be five or six years _____ it is possible to test this medicine on human patients.
#68451
A
before
B
that
C
since
D
when
推荐题目
．— I wonder if you _______ a picnic tomorrow.— Yes. But if it ______, we’ll visit the museum instead.
#41003
A
have; rains
B
will have; rains
C
have; will rain
D
will have; will rain
While we _________, we saw a UFO land on a street.
#41211
A
were shopping
B
shopped
C
are shopping
D
shop
you may have, you should gather your courage to face the challenge.
#68062
A
However a serious problem
B
What a serious problem
C
However serious a problem
D
What serious a problem
I’m glad to hear a new school building has been put up ______ once lay an abandoned cinema.
#67912
A
where
B
when
C
why
D
that
It was in Yuexiu Park _____ they dated for the first time _____ the old couple told us their story.
#69731
A
that, that
B
where, when
C
that, when
D
where, that