单项选择题
They ______ visit us a lot but they don't now.A．mustB．n...
单项选择题They ______ visit us a lot but they don't now.
He is reading a novel but he ______ a textbook.A．ought ...
单项选择题He is reading a novel but he ______ a textbook.
We had hoped that our team would win the game, but ____...
单项选择题We had hoped that our team would win the game, but ______ team played very well.
