The museum will open in the spring with an exhibition and a viewing platform ___visitors can watch the big glasshouses being built.
#31051
A
what
B
where
C
when
D
why
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Some of my workmates prefer to send to our QQ group ______ news they got.
#30165
A
whatever
B
however
C
whichever
D
whenever
_____ the Internet brings much profit in, it can cause o lot of social problem.
#80454
A
If
B
While
C
Once
D
When