关于 英语语法的几个题目

关于 英语语法的几个题目
29.Mary went to the box office at lunch time,but all the tickets ____out.
A.would sell B.had sold C.have sold D.was selling
到底什么时候用have sold?
31.A small plane crashed into a hillside five miles east of the city,_____all four people on board.
A.killed B.killing C.kills D.to kill
B,我就郁闷 难道是 正在杀.
35.Bill suggested _____ a meeting on what to do for the Shanghai Expo during the vacation.
A.having held B.to hold C.holding D.hold
40.As a new diplomat,he often thinks of he can react more appropriately on such occasions.
A.what B.which C.that D.how
选 D为什么呢？
38.Hearing the dog barking fiercely,away _____.
A.fleeing the thief B.was fleeing the thief
C.the thief was fleeing D.fled the thief
选 D为什么呢？

1,had+过去分词表示过去之过去,比如这个题,她在午餐时去买票,但票卖完了,她去买票本来就是过去的动作,而票卖完是发生在她买票之前,就是过去的过去,就用had；而have的话是表已完成,对现在的影响,不存在动作先后（一定是发生在过去动作之前的动作才用had）
2,不是正在啦,是伴随状语,ing表主动,ed表被动,to的话表将来；这里是说这个小飞机坠毁了,上面四个人都死了,是这个坠毁造成四人死亡的,是主动
3,固定用法,记住好了suggest doing
4,作为一个新任的外交官,他总是思考如何在这一些场合作出更恰当的反应.就是根据句意选的哦,如何how
5,这是一个倒装句式,向如果介词被放到了前面的句子,后面要全部倒装,这个句子正常就是Hearing the dog barking firecely,the thief fled away.现在只是倒装了而已（全部倒装,把本来的谓语提到主语前面就好了）再比如：In front of my house stands a tall tree.其实就是A tall tree stands in front og my house.
[你看最后一个啊,hearing并不是说正听到哦,只是表主动而已,小偷自己听到]