—Alice looks blue today.—Yes，I asked her，but she wouldn't say ______ troubled her.
#85419
A
why was it that
B
that was why
C
it was what
D
what it was that
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It was in the lab, ________ was taken charge of by Professor Curie, _______ they did the experiment.
#85369
A
where; that
B
that; that
C
which; that
D
which; where
It was not until 1938 _________ the first colour TV programme was broadcast.
#84982
A
which
B
that
C
when
D
on which
It was _____back home after the experiments.
#85525
A
not until midnight did he go
B
until midnight that he didn’t go
C
not until midnight that he went
D
until midnight when he didn’t go
It was yesterday ____ I saw her and it was almost 10 o’clock ____ she arrived.
#85078
A
when; when
B
that; that
C
when; that
D
that; when