Mrs. Weng came back from France in 2010. She _________ there for four years.A. works B. worked C. has worked
You should study harder______ it is too late to catch up.
Tell the boy the news. He is ______to understand it.
Class is over. Let’s stop______ a rest.
--- _________ difference the day made! We were very happy.
--- I didn’t bring back anything from America. --- _________ at all? Why not?