— Remember the first time we met, Jim?— Of course I do. You _______ in the library.
It is about 9∶30 pm. ________he comes back home after three evening classes.
It was in the lab _______was taken charge of by Professor Harris ________they did the experiment.
________is it ________has made Peter ________he is today?
All workers in this factory are required to _______at the age of 60.
(2012年天津卷,2)The letters for the boss _______on his desk but he didn't read them until three days later.