The astronauts found that ______ the spaceship went further and further into space, it became more and more difficult to control its own movements.
#32888
A
if
B
till
C
as
D
while
推荐题目
Is this the reason____ at the meeting for his carelessness in his work?
#32522
A
he explained
B
what he explained
C
how he explained
D
why he explained
Be quick, _____ we’ll miss the beginning of the fireworks display in the park.
#31590
A
so
B
or
C
because
D
though