Now then, children, Its time you ________.
单项填空(共20题,每小题1.5分,共30分)“We can’t go out in this weather,” said Bob, ____ out of the window.
He is so ______ to his English teaching that I admire him for his ______.
. It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays.
. To the surprise of many people, in ten years the city’s population ____ by 12%.
--What about the protection? ---Let’s keep the surface ____ dirty by putting a cover over it.