下面四个题选什么及原因1.thefoodshowsnosignofa.touchedb.beingtouchedc.havingbeentouchedd.havingtouched2.whenireturnedhomefromalongjourney,ifoundmyhousea.hadbeenbrokeninb.wasbrokenintoc.hadbrokenind.hadb

Question

下面四个题选什么及原因
1.the food shows no sign of__
a.touched b.being touched c.having been touched d.having touched
2.when i returned home from a long journey,i found my house___
a .had been broken in
b.was broken into
c.had broken in
d.had broken into
3.if one __by vanity,he will be very particular about others' clothing and appearance.
a.overcome
b.will be overcome
c.is overcome
d.has overcome
4.don't be late.i hate__ waiting for a long time
a.being keeping
b.be kept
c.to be kept
d.be keeping
建议答题的各位还是大概说下原因,我不懂我还是会接着追问.语法太差了 ╮(╯▽╰)╭,

Answer 1

1.the food shows no sign of__
c.having been touched 完成时、被动语态
这食物看来没有“被碰触过”的迹象.因为 紧接在 no sign of 后面所以用 having 动名词引导
2.when i returned home from a long journey,i found my house___
a .had been broken in 过去完成时（had）、被动语态
因为主要谓语 returned、found 都是过去时,房子被闯入的时间点更早,因此用过去完成时.
3.if one __by vanity,he will be very particular about others' clothing and appearance.
c.is overcome 这里的overcome是过去分词.be + 过去分词 =〉被动语态
如果一个人被虚荣所征服,他将.
4.don't be late.i hate__ waiting for a long time
c.to be kept 不定式被动语态 hate to be kept...很讨厌被（迫）.