The earth will become worse and worse ________ we do something to stop her from being polluted.
#55977
A
if
B
even if
C
when
D
unless
推荐题目
---She broke her mother’s favourite vase______ she stood up. ---It’s a pity!
#55549
A
while
B
as
C
after
D
until
He________go to bed_______he finished his homework.
#56992
A
doesn’t; until
B
doesn’t; and
C
didn’t; until
D
didn’t; for
--- What would you like to drink, coffee or orange juice?--- . Please give me a cup of tea.
#58135
A
Neither
B
Both
C
All
D
None
---- ________ it is late, I shall go home now. ---- OK, go ________.
#56210
A
So; down
B
If; up
C
Since; ahead
D
Because; out