選A
用happens to,全句意思“如果機(jī)器出了什么問(wèn)題,請(qǐng)通知我.” happen to sb/sth意思是“出了(問(wèn)題),發(fā)生(意外)”,通常指“出了意想不到的(壞)事情”.又如:An accident happened to him.他出了事故.happen on意思是“偶然碰到,偶然發(fā)現(xiàn)”,例如:The two men happened on each other by chance.那兩人偶然碰了面.
If anything _________ the machine,please let me know.A.happens to B.happens on C.happened to D.happened on
If anything _________ the machine,please let me know.A.happens to B.happens on C.happened to D.happened on
英語(yǔ)人氣:980 ℃時(shí)間:2020-09-06 12:12:50
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