____ the flight to Beijing will be delayed is ____ I’m especially worried about.
#69040
A
If; what
B
Whether; that
C
When; that
D
Whether; what
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A new subway will have been completed in the city by the end of the year 2007 , will be very convenient for us to get around shopping and sightseeing.
#73671
A
when it
B
where it
C
when that
D
which that
After designing more experiments,they were able to clarify the procedure bees communicate information that they use to find and fetch food.
#71656
A
by which
B
in which
C
by that
D
for which
--- I think the environment is becoming worse and worse.--- Yes, I really don’t know we can do about it.
#68628
A
which
B
whether
C
that
D
what