We cannot figure out ______ quite a number of students were infected with the flu.
#69681
A
that
B
when
C
why
D
where
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I have kept that photo ______ I can see it every day, as it always reminds me of the happy days in New York.
#67902
A
which
B
where
C
whether
D
when
— that he picked up French?—It was in 1949 he traveled in France.
#69782
A
Was it when; that
B
When was it; that
C
Was it when; when
D
When was it; when
I could not remember the text .
#68396
A
However hard did I try
B
However hard I tried
C
However I tried
D
However had I tried hard
Some old Chinese customs, many of you are too young to know, have already died out．
#69475
A
what
B
that
C
how
D
as