[填空题]Last spring, I was fortunate to be chosen to participate in an exchange study program. In my application letter, I was careful to 21 how much I wanted to see France; evidently, my excitement really came through in my words. Once I 22 that I was going, all I could think about was the fun of foreign travel and making all sorts of new and 23 friends. While travelling was inspiring and meeting people was 24 , nothing about my term in France was what I 25 . The moment I arrived in Paris, I was 26 by a nice French couple who would become my host parents. My entire experience was joyous and exciting 27 I received some shocking news from my program coordinator: there had been a death in my host parents’ extended family. They had to travel outside France for several weeks. That afternoon, I had to 28 out of one family’s house into another. The exchange coordinator told me I’d have a 29 this time and asked wheth
A. A．need
B．shall
C．must
D．can