题目内容

All things are difficult _______ they are easy.

A. behind
B. before
C. after
D. in front

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We should first _____ our appreciation for the enquiry.

A. say
B. tell
C. express
D. speak

We should encourage the customer to ask you for _____ information

A. many
B. much
C. more
D. a lot

Before ______ quotation, we should have a comparison between your products and other identical products

A. making
B. make
C. made
D. maken

Their purchase quantity are ______ so that they won’t make the same offer.

A. varying
B. variety
C. vafiried
D. various