多项选择题
It is high time that such a practice ()an end to.
A. is put B. be put C. was put D. must be put
多项选择题 A dictionary of that size has ()words than you need and it's not so handy.
多项选择题 The man who came to help us is a friend of ()
多项选择题 In the poorest nations of the world, more than half of the population()on farms
