单项选择题

I ______ you that these goods will be delivered to you tomorrow morning.

A．assure
B．ensure
C．insure
D．sure
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______ of the three sisters you choose to marry, you will have a good wife.
A．Whichever
B．Which
C．Whatever
D．Any
单项选择题
We ______ trouble from people who like leaving things around.
A．used to have
B．have always had
C．are always having
D．had
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