单项选择题

________ did Arthur realize that there was danger.

A．Upon entering the store
B．When he entered the store
C．After he had entered the store
D．Only after entering the store

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单项选择题

A good newspaper publishes both ________ and foreign news.

A．diplomatic
B．democratic
C．domestic
D．dramatic

单项选择题

I'm getting fat. ________ .

A．If I were you, I'll eat less
B．If I am you, I'd eat less
C．If I were you, I'd eat less
D．If you were me, I'd eat less

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