－A trip to outer space must be fun and exciting.
－______.That's why so many people are looking forward to such a trip.
A.That's all right
B.I perfer to
C.I suppose to
D.It depends
我最不会做这种题关于生活交际问题了!能不能顺便把每个选项的意思翻译一下呢?这样我就可以记住下次好运用了!