The new staff didn’t know how to ;use ;the system ;_________ ;I explained ;it to ;him yesterday. ( 章节：1 难度：2)
- A、until
- B、because
- C、if
- D、since
正确答案:A
答案解析:有
微信扫一扫手机做题
做题室题库
做题室题库
The new staff didn’t know how to ;use ;the system ;_________ ;I explained ;it to ;him yesterday. ( 章节：1 难度：2)
微信扫一扫手机做题