It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.
#30830
A
since
B
before
C
after
D
when
推荐题目
The income of skilled workers went up. ________, unskilled workers saw their earnings fall.
#31648
A
Moreover
B
Therefore
C
Meanwhile
D
Otherwise
--- Did your father come back early last night?--- Yes. It was not yet eight o’clock _______ he arrived home.
#31230
A
before
B
when
C
that
D
until
As we have planned, we’ll go to Beijing to attend her sister's wedding party. We'll also visit our mother school _____ we go there.
#79913
A
unless
B
when
C
once
D
even if
children believe they can succeed, they will never become totally independent.
#33346
A
If
B
Though
C
Unless
D
When
_______ as many local people as possible when you are abroad and you find it easier to overcome the culture difference.
#31290
A
To know
B
Knowing
C
Known
D
Know