再来几道英语题.辛苦英语高手们了..

再来几道英语题.辛苦英语高手们了..
1.If only he_____,he would have met you
A.comes
B.came
C.has come
D.had come
2.In some countries,___is called"equality"dose not really mean equal right for all people.
A.which
B.that
C.what
D.one
3.The president of the university,together with the dean,___a conference for the purpose of laying down certain regulations.
A.is planning
B.are planning
C.have planed
D.were planning
4.An investigation was made into the accident___fifty people were killed.
A.in which
B.where
C.when
D.for which
5.Only when thousand of flowers bloom together____here.
A.can spring be considered
B.could spring be considered
C.spring will be considered
D.spring can be considered
thanks everybody!