The space suits can be adjusted so that the team can reproduce different levels of gravity as if they________in space.
#86407
A
are
B
has been
C
were
D
had been
推荐题目
Without the air to hold some of the sun’s heat, the earth at night_____very cold, too cold for us to live.
#88274
A
will be
B
would have been
C
is
D
would be
If you want to borrow a football after school, your student ____ here.
#88148
A
has to leave
B
mustleave
C
has to be left
D
mustbe left
The manager demanded that the workers _______ extra hours to complete the task ahead of time.
#86858
A
work
B
were working
C
worked
D
would work