英语单项选择1.thisquestionhasbeendiscussed()a.sometimeb.forsometimesc.sometimesd.forsometime2.itmusthaverainedlastnight,()a.mustn'tb.needn'tc.hasn'td.didn't3.ifsomethingimportanthappensthewhileworld()it.a.know

Question

英语单项选择
1.this question has been discussed ( )
a.some time b.for some times c.sometimes d.for some time
2.it must have rained last night ,( )
a.mustn't b.needn't c.hasn't d.didn't
3.if something important happens the while world ( ) it.
a.know b.knows c.are going to know d.knew
4.he isn't ( ) today to so he stays home.
a.good b.nice .c.himself d.better

Answer 1

1.d; 这个问题已经讨论过一段时间了;sometimes指有时候；some time指一段时间；some times指有几次；用来连接时间的介词用for.2.句意不清楚.3.c;如果重要的事发生了,就会知道；4.a；good是形容词；nice是副词；himse...