—You seem familiar with Mr. John?—Of course, we________ together for three years in the 1990s.have worked B. had worked C. are working D. worked
You shouldn’t have the machines ______ all the while. You ought to have them ______ now and then.
--- Did you go to the show last night?--- Yeah. Every boy and every girl in the area ______ invited.
With no bridge, they had to swim across the river to the _______ bank to ______ the news.
. --- Great changes have taken place in your city!--- Yes, our city has developed into a big city, which is ______ it used to be.
. --- I doubt ______ I’ll be chosen for the team.--- The chance is one tenth ______ you will be chosen.