2. 外语
  3. Traffic signs are used______the flow of traffic.

Traffic signs are used______the flow of traffic.

admin2019-07-01  63
问题 Traffic signs are used______the flow of traffic.
选项 A、the control
B、control
C、to control
D、for control
答案C
解析 The verb are used is followed by an infinitive: to control.
转载请注明原文地址:https://kaotiyun.com/show/RvfO777K
0

托福（TOEFL）

相关试题推荐
随机试题
最新回复(0)