He seems to be( )about something.
A. worrying
B. to worry
C. to have worried
D. having worried
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At the end of each dinner at home, all the rubbish should( ).
A. be got of
B. be got rid of
C. be got off
D. be got rid
Potato, tomato, green vegetable, sweet corn, mushroom, etc. are the most famous farming products( )the farming field.
A. coming from
B. coming out
C. coming into
D. coming across
It's raining now,( )go out until after the rain.
A. let's don't
B. don't let's
C. let's
D. let's not
Let all the dedicated capable staff( ).
A. be promoted
B. promoted
C. be promoting
D. promoting
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