1. — It was great to see you again.
— ______ .
A. I’ll catch up with you B. Be sure to keep in touch
C. Try to hold on D. You’re getting ahead of yourself
2. When he discovered that it was all ______ joke, he laughed so hard that he nearly fell to _____ ground.
A. a; 不填 B. the; 不填 C. a; the D. the; a
3. I have learned a lot about Asian customs, ______ in the small village for three years in the early 1990s.
A. lived B. to live C. having lived D. to have lived
