The companies are working together to create ______ they hope will be the best means of transport in the 21st century.
#79776
A
which
B
that
C
what
D
who
推荐题目
What an unforgettable experience! I'll write it down it is still fresh in my memory．
#30193
A
since
B
while
C
after
D
until
But when I got ____ the town ought to have been, all I found was a gasstation.
#31072
A
what
B
which
C
where
D
that
Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster.
#30282
A
before
B
as
C
unless
D
in case
--It is a long time ______ I saw you last year. --Yes. And it will be some time ______ we see each other again.
#30917
A
when; after
B
after; when
C
since; before
D
before; since