题干
-- you go to Xi'an with me tomorrow?
-- I'd love to. But I have a lot of work to do.
A：Must
B：Need
C：Can
D：Do
答案(点此获取答案解析）
C
-- you go to Xi'an with me tomorrow?
-- I'd love to. But I have a lot of work to do.
A：Must
B：Need
C：Can
D：Do
