Parents find it difficult ________ with their children.
#48462
A
talk
B
talked
C
talking
D
to talk
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I saw him     when I passed by.
#48543
A
ran
B
to run
C
running
D
run
The couple ______at this time yesterday. Nobody knew when they stopped.
#50618
A
heard quarrelling
B
heard to quarrel
C
were heard quarrelling
D
was heard to quarrel
 —Christmas is coming. Don’t forget _______ my best wishes to your family.—OK, ______. Thank you very much. 
#50635
A
to give; I don’t
B
to give; I won’t
C
giving; I won’t
D
giving; I don’t