running hard to catch up withthe rest of his team when he fell over his own feet. When he struggledup, he felt his left ankle ______, and found his left hand ______ and his nose______.

She has been practising _______ the same tune on the piano for nearly an hour. [ ]

Have you found a good method to solve the problem—No, I haven’t worked it out

Some people disagree with the idea _____digital textbook will improve education quality while the traditional textbookis out of date

The story is so ________that all of us are_______init.