_____ the flight to New York will be delayed is ____ I'm especially worried about.
#79409
A
If; what
B
Whether; that
C
When; that
D
Whether; what
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The moment I will never forget is _____ my parents discussed my new school life with me before the new term started.
#79505
A
that
B
which
C
when
D
where
I'm afraid he’s more of a talker than a doer, which is ____ he never finishes anything．
#79486
A
that
B
when
C
where
D
why
Good food, good sleep, no exercise. That's ________ he gained weight.
#79333
A
how
B
when
C
what
D
whether
He didn't go by bike with me.That's ________ there was something wrong with his bike.
#79319
A
because
B
why
C
how
D
when