单项选择题

When we have difficulty ______ desired objects or reaching desired goals we experience negative emotions such as grief and anger.

A．at obtaining
B．in obtaining
C．on obtaining
D．with obtaining
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单项选择题
I can't give you ______ for the type of car you sell because there's no demand for it in the market.
A．an expense
B．a purchase
C．a charge
D．an order
单项选择题
By lip reading or watching the movements of the speaker's lips, a deaf person can actually see ______ the person at the other telephone is saying.
A．that
B．how
C．what
D．where
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