早上遇见刘老师，应说： A. Thank you, Mr. Liu.B. How?C. Good morning, Mr. Liu.
I am out of the window. A.pointing B.drawing C.looking
从B栏中选择能回答A栏中各句问题的选项，将序号填入题前括号里。
pen is lost! A. You B. I C. My
I need four, please. A. tickets B. ticket C. station
A train is than a plane. A. faster B. slower C. slow
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