几道高中英语选择题(关于复合句.正确答案已知,请给出解释)
1.MotherwasworriedbecauselittleAlicewasill,especially____fatherwasawayinFrance.
a.asb.thatc.duringd.if
正确答案为a,请问为什么c不对?另外可不可以填when?
2.Sarahhopesthbecomeafriendof____sharesherinterests.
a.anyoneb.whomeverc.whoeverd.nomatterwho
正确答案为c,我选了b.为什么b不对?
3.IntheofficeIneverseemtohavetimeuntilafter5:30p.m.,____manypeoplehavegonehome.
a.whosetimeb.thatc.onwhichd.bywhichtime
这题我觉得没一个选项对,但正确答案是d.请问原因?
以上3题,请高手赐教.