---Someone is knocking at the door. Who may it be?
---It ______ be Tom. He is still in the school.
A. can’t B. mustn’t C. couldn’t D. may not
---Have you seen Dr. Adams recently?
---No. He __________ Hong Kong for an important meeting. He’ll come back tomorrow.
A. has gone in B. has been in C. has gone to D. has been to
--- Would you come b
ack to have dinner with us this evening?
--- I’d love to, ______ I have an important meeting .
A. and B. or C. so D. but
There __________great changes in our hometown in the past fifteen years.
A. has been B. have been C. was D. were
-----________did your uncle leave his home town ?
----He ___________for nearly twenty years.
A. When , has left B. When , has been away
C. How long , has left D. How long , has been away
It's very to play Chinese chess with old friends at home.
A. pleasant; / B. interesting; the C. pleasant; the D. interested;
