问题

The school rules state thatno child shall be allowed out of the school during the day,_____accompanied by an adult.[ ]

A: once
B:when
C:if
D:unless

正确答案是：

同类题型

依次填入下列各句横线处的成语，最恰当的一组是（）①正因为李老师对学生的挚诚与关爱，学生才更愿意与她________地交谈，遇到困难时也主动向她寻求帮助。②中美在大数据、云服务等多个方面都需要思想之间的碰撞，面对最为敏感的网络问题，________的探讨才是妥当地解决问题的方式。③只有领导敢于把敏感的、实质性的问题摆在桌面上，不避重就轻，群众才会________，知无不言。

We came home and found her ________ on the sofa.

The difficulty lies in ________ they will come to our help immediately.

54 Extensive tests have been onthe patient

_______ you ________ Shanghai Disneyland this summer holiday