A week-long raining is coming, _________, the farmers say, will do harm to the growth of plants.
#34433
A
it
B
that
C
what
D
which
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He waited ________ the volcano became quiet and he was able to return two days later.
#80251
A
when
B
before
C
as
D
until
______ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
#32459
A
If
B
As
C
Because
D
While