相关试题
There are always ________ lights in each country: red, yellow and green.
A. two B. three C. four
--Where does the rain come from? --It comes from the___.
A. sun B. clouds C. river
There are always ________ lights in each country: red, yellow and green.
A. two B. three C. four
--Where does the rain come from? --It comes from the___.
A. sun B. clouds C. river
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