Is this museum _______some German friends visited the day before yesterday?
#68179
A
which
B
that
C
where
D
the one
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—Can we get everything ready by the weekend?—It all depends on ______ we can get Mr. Green’s co-operation.
#74165
A
that
B
what
C
whether
D
if
The old building, behind _______ was a famous church, was _______ we used to work.
#72568
A
that, the place
B
it, the place
C
which, where
D
what, where
Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.
#67597
A
since
B
after
C
before
D
when