题目内容：

1、I,who_____________your good friend,will share your joys and sorrow.
A.am B.is C.are D.was
2、Three hours with your girl friend ________________to be a short time.
A.seem B.seems C.is seeming D.has seemed
3、The wounded __________________good care of here now.
A.is taken B.are being taken C.are taking D.is taking
4、Those who________________singing may join us.
A.are liking B.likes C.enjoy D.is fond of

优质解答

B B B C
1.在who 后面will前的部分是who引导的一个非限定定语从句,定I,对I这个先行词进行修饰和补充说明.
2.时间词后面不管是复数也好单数也罢,谓语都只能用单三,
3.The wounded 作为集合名词,表复数意义,而后面的时态要用被动语态的现在进行时,因为伤员是被照顾的,还有now这个时间词.
4.同样who引导了一个定语从句,主句是Those may join us,这个定语从句补充说明了Those 是哪些人,是那些喜欢唱歌的人,而Those 是表复数,后面定语从句的谓语要与先行词一致,所以也用复数.