【单选题】What did the teacher ______ you to ______ at the meeting? [ ]
【单选题】---What did Tom ask you yesterday morning? --- He asked me if I _______________ to Beijing with him this Saturday.
【单选题】个人的不安全因素主要包括三方面,()方面因素指人在心理上具有影响安全的性格、气质和情绪,如急躁、懒散、粗心等。
【单选题】Did you want me to ask Father _____.
A.
when he would let us go
B.
when would he let us go
【简答题】三相电路中,负载的连接方法总体来说有()和()两种。