题目内容

请简述病毒性营销创意设计的主要步骤。

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Tim _____ the tree now.

A. is climbing
B. climb
C. are climbing
D. climbing

______ on your new shoes, please.

A. putting
B. Put
C. To put
D. put

_____ not _____ this magazine.

A. Does, reading
B. Do,reading
C. Do, read
Does, read

______ Emma ______ a meal? ---No, she isn't.

A. Is, cooking
B. Is, cook
C. Are, cooking
D. Are, cook

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