735.As I will be away for at leat a year,I'd appreciate ______ from you now and then _______ me how everyone is getting along.

A.hearing;tell

B.to hear;tell

C.hearing;telling

D.to hear;to tell

736.You should have thanked her before you left.

I meant ____,but when I was leaving,I couldn't find her anywhere.

A.to do

B.to

C.doing

D.doing so

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