Since June 1 2008，all the markets have_________free plastic bags．
A．to stop to provide B．to stop providing
C．stopped to provide D．stopped providing
---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
-- Has your sister come back? --Yes, she has. She______ back two days ago.
A. came B. has came
C. has come D. has been
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 chess with old friends at home.
A. pleasant; / B. interesting; the
C. pleasant; the D. interested;
