单项选择题

--Your city looks beautiful!
--Yes. Lots of trees and grass ______last year.

A．were planted
B．have been planted
C．planted
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单项选择题
What is the best exercise to do to burn calories if you don’t like running
A．Bicycling.
B．Tennis.
C．Swimming.
单项选择题
When was the bridge built over the river Granta
A．In the 9th century.
B．In the 13th century.
C．In the 15th century.
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