2020-2021学年高一课标英语周报总第3557期答案，小编收集了2020-2021学年高一课标英语周报总第3557期答案的相关答案，没有答案的敬请期待！完整版的周报答案关注wx号：趣找答案
1. Emergency line operators must always ________ calm and make sure they get all the information they need to send help.
A . stay
B . become
C . appear
D . grow
