单项选择题


A．prevent
B．protect
C．warn
D．cause
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问答题
Write a letter of complaint. The company for which you work places an order for photographic paper and chemicals, however, the company which acknowledges your order on 20th May has delayed the delivery. You should write approximately 100 words. Do not sign your own name at the end of your letter. Use International Trade Corporation instead. You do not need to write the address.
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