Ladies and gentlemen, please fasten your seat belts. The plane  ________.
#104000
A
takes off
B
is taking off
C
has taken off
D
took off
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Why did you just sit and watch? You _______ me.
#104478
A
could help
B
should help
C
could have helped
D
must have helped
Look! The pond ________, and no fish in it can survive.
#99833
A
dries up
B
has dried up
C
had dried up
D
dried up