It was a time ________ volunteers from all over the world visited this nursing home regularly.
#77070
A
which
B
what
C
where
D
when
推荐题目
I can think of many cases ______students obviously know a lot of English words and expressions but couldn’t write a good essay .
#77369
A
why
B
which
C
as
D
where
_____ 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