单项选择题

E-commerce has increased the______on customer satisfaction and delivery fulfillment.

A．center
B．focus
C．workforce
D．target
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单项选择题
We ______ non-Chinese customers with bilingual menus written both in Chinese and English.
A．cater to
B．serve for
C．target at
D．check in
单项选择题
—Oh, I am sick of the weather here. —So am I. It _____since last Friday. Wish it could stop raining tomorrow.
A．rained
B．has rained
C．was raining
D．has been raining
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