Complete the following sentences with the proper form of the words given in brackets.1 The missing boys were last seen (play) near the river.
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(lose) in thought, he almost ran into the car in front of him.
He worked so hard that he got his pay (raise).
(see) the house on fire, he dialed 119.
下列设备不属于二次设备的是( )。
A. 继电器
B. 电流表
C. 连接片
D. 断路器