请根据中文句子含义，把对应的英语句子的空缺部分补充完整, 每空填一词。
1.It is now a children’s festival, __________ they can _________ and go to their neighbor’s homes to ask for sweets.
现在万圣节成了一个孩子们的节日，在这一天他们乔装打扮后去邻居家要糖吃。
2.___________her customers might get thin after eating Yong Hui’s food, they were not eating enough energy-giving food _________.
尽管顾客吃她的餐馆里的饭会变得苗条，但是他们摄取不到足够的热量来保持健康。
3.The fact is that I earned my passage by __________ an unpaid hand, which ____________ my appearance.
事实上我靠做义工来顶替船费。这就是我为什么衣冠不整的原因了。
4.They are putting too much carbon dioxide into the atmosphere, which ______ heat ________escaping from the earth.
它们把过多的二氧化碳释放到大气层中，这使得地球上的热不能释放到太空中去。
5.It is ____ wet there that the trees are extremely tall, some _____________ over 90 meters.
那儿的湿度很大，所以树都长得特别高，一些高达90多米。
His promise___________ he would give away half of the year's income to the disabled turned out a lie, _________ made the public feel cheated．
A. which； what B. that； which
C. what； which D. which； that
When walking down the street, I came across David, when I _____ for years.
A. didn’t see B. haven’t seen
C. hadn’t seen D. wouldn’t see
Some of the texts have too many new words and expressions _______ are hard for me.
A. which B. who
C. where D. what
---- The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
---- Oh, dear! She _______ a lot of difficulties!
A. may go through B. might go through
C. ought to have gone through D. must have gone through
Jim will go on a trip to Sichuan, ________ his parents used to live.
A. where B. which
C. when D. that
