题干
Mary and Joy are ____ Class One. They are ____ the USA.
A：from; in
B：in; from
C：to; from
D：in; to
答案(点此获取答案解析）
B
Mary and Joy are ____ Class One. They are ____ the USA.
A：from; in
B：in; from
C：to; from
D：in; to
