题目内容
_________ caused the accident is still a mystery.
| A．How | B．What | C．That | D．Where |
B
解析试题分析：句意：什么事情引起的这个事故仍然是一个谜。这里是what引起的主语从句，what在从句中作主语，从句作主语时，谓语动词一般情况下应该单数；that在主语从句中，不作成分；how与where不能在从句中做主语，因为这里缺少的是主语从句的连词，并且连词在从句中作主语，故选B。
考点：考查连词的用法。
新课标同步训练系列答案
一线名师口算应用题天天练一本全系列答案Hi, Bob. How are you doing? It has been a long time _____ we left our junior middle school.
| A．when | B．that | C．before | D．since |
____you said at the meeting describes a bright future for the company.
| A．When | B．How | C．What | D．That |
Playing QQ’s “Happy Farm” by planting, watering, fertilizing, spraying, harvesting and selling of virtual vegetables, fruits and flowers, we can find out all the excitement is about.
| A．that | B．if | C．what | D．when |
They held a meeting ____ they could hear everyone’s idea.
| A．even if | B．now that | C．in case | D．so that |
I wonder when it was __________ you came to realize __________ he said meant.
| A．that; what | B．what; that | C．what; what that | D．that; what what |
________it is hoped that college students should be equipped with the ability to take a good set of notes, this is not always the case．
| A．When | B．While | C．As | D．Unless |
She says that she’ll have to close the shop ________ business improves.
| A．if | B．unless | C．after | D．when |