There is ______ what the weather will be like.
#103479
A
not knowing
B
no knowing
C
not known
D
no known
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I____ her to work hard at English, but she didn’t listen to me.
#102560
A
persuaded
B
tried to persuade
C
managed to persuade
D
suggested
Ladies and gentlemen, please fasten your seat belts.The plane __________. 
#101135
A
takes off
B
has taken off
C
is taking off
D
took off