单项选择题

On reaching the top floor I suddenly realized that I ______ my book on the service desk.

A．leaves
B．left
C．had left
D．was left
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The professor, together with his students ______ capable of doing the skilled work now.
A．is
B．are
C．being
D．have
单项选择题
What does Larp’s sell
A．Bags.
B．Shoes.
C．Clothes.
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