一个很迷惑的英语完形填空----1个空-----------务必高手有耐心者帮忙

一个很迷惑的英语完形填空----1个空-----------务必高手有耐心者帮忙
Last spring,I was fortunate to be chosen to participate in an exchange study program.In my application letter,I was careful to express how much I wanted to see France; evidently,my excitement really came through in my words.Once I knew that I was going,all I could think about was the fun of foreign travel and making all sorts of new and interesting friends.While travelling was inspiring and meeting people was exciting,nothing about my term inFrancewas what I expected.
The moment I arrived inParis,I was greeted by a nice French couple who would become my host parents.My entire experience was joyous and exciting until I received some shocking news from my program coordinator:there had been a death in my host parents’ extended family.They had to travel outsideFrancefor several weeks.That afternoon,I had to move out of one family’s house into another.The exchange coordinator told me I’d have a roommate this time and asked whether I could share a bedroom with an English speaker.To avoid the temptation to speak my native language,I asked not to be placed with an English-speaking roommate.When I got to my new room,I introduced myself to my new roommate Paolo,a Brazilian the same age as I,whom I was surprised to find playing one of my favorite CDS!In just a few hours,we knew we’d be good friends for the rest of the term.
I left France with many stories,so when people asked me what my favorite part of the trip was,they are always surprised to hear me talk about my Brazilian friend Paolo and scores of weekdays in class,weeknights on the town,and weekends exploring France we enjoyed together.I love how people（1）seem so different,but end up being so similar.
1、A：need B：shall
C：must D：can
请选出答案并解释其余选项为什么不对.

这是哪里出现的题呢?只有一个空?
正确答案应该是 D:can
这些词的意思都很多,但一般情况下,
A 表示“需要”
B 表示“应该”
C 表示“必须”
D 选项的 can 有“可以,能够”的意思
最后一句话大概的意思是：
有时人与人之间看上去可以是那样地不同,但最终发现却是那样地相似,这样真好.
（这里可能需要结合文中的内容来理解.作者是在谈一位巴西的朋友,而作者自己却是一个以英语为母语的人.可以从下面这句看出 To avoid the
temptation to speak my native language,I asked not to be placed with an
English-speaking roommate.）
供参考