Humans are polluting the earth day by day, ________, of course, will cause punishment sooner or later.
#78581
A
that
B
it
C
which
D
what
推荐题目
_____ in the library regulations that any book borrowed be returned by due time, or the borrower will be fined．
#78012
A
What is required
B
It is required
C
As is required
D
Which is required
Is this the reason _____ at the meeting for his carelessness in his work?
#76822
A
he explained
B
what he explained
C
how he explained
D
why he explained
What if we meet with a situation ________ none of us are able to deal with?
#75935
A
where
B
in which
C
what
D
that