题目内容
Emergency line operators must always ________ calm and make sure that they get all the information they need to send help.
A. grow B. appear C. become D. stay
D
考查系动词的用法。根据句意“紧急热线接线员必须保持镇定”可知答案为D. stay“保持”。
练习册系列答案
相关题目
题目内容
Emergency line operators must always ________ calm and make sure that they get all the information they need to send help.
A. grow B. appear C. become D. stay
D
考查系动词的用法。根据句意“紧急热线接线员必须保持镇定”可知答案为D. stay“保持”。