(2013·湖南,26)If nothing________,the oceans will turn into fish deserts.
#99736
A
does
B
had been done
C
will do
D
is done
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31.By the time we _____the airport, the plane_____.
#103311
A
arrived at; had taken off
B
had got to; took off
C
got to; had taken away
D
arrived at ; had taken away
—You've left the light on.—Oh.So I have.________and turn it off.
#99186
A
I'll go
B
I've gone
C
I go
D
I'm going
I’m afraid we must hurry—the train        at six o’clock.
#100305
A
leaves
B
will leave
C
has left
D
is going to leave