—I wonder whether the speaker has arrived.— ________ ，I’ll check at the reception desk.
#32400
A
Wait and see
B
Beg your pardon
C
If you’ll excuse me
D
It’s still early
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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
This is one of the most interesting films _____ shown last week.
#33399
A
which was
B
that was
C
which were
D
that were
We'll have a picnic in the park this Sunday ________ it rains or it's very cold.
#30680
A
since
B
if
C
unless
D
until
---Mum, can I go out to play football with Alice? ---No, you can’t your homework is done.
#33770
A
while
B
after
C
until
D
as