问题补充:
单选题Asmiddleschoolstudents,we_____thepolicetokeeporder.A.are used to helpB.used to helpingC.used to helpD.used to be helped
答案:
C解析used to do sth. 过去常常做…;be used to doing sth.习惯语做…。
时间:2022-10-22 07:58:49
单选题Asmiddleschoolstudents,we_____thepolicetokeeporder.A.are used to helpB.used to helpingC.used to helpD.used to be helped
C解析used to do sth. 过去常常做…;be used to doing sth.习惯语做…。