What do you think made Mary so upset? — ____ her new bike. [ ]

They have discussed the problem for hours. — Have they come to any_____

The little boy with an overcoat felt grateful _____ us for our letting him ______ the game[ ]

The students of Class 7 are going to the seaside this weekend.—Remember _____ them not to keep _______ alone in the sea. It’s dangerous.

More than twenty_____students are having animportant exam at the moment.