( ) 3. --________ there a pair of pants on the bed ? -- No, but there is a coat .
A.
Do
B.
Does
C.
Is
D.
Are
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【判断题】Simple chargers of this type require manual disconnection at the end of the charging, or may have a timer to cut off charging at a fixed time.此类简单充电器在充电结束时需要手动断开连接,或者需要一个定时装置在设定的时间断开充电电流。