（天津市河东区201 4年高三二模考试）3.1 wonder if this dress is____in a larger size. This one is too tight.

Bears ________ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.                                

John is the only one of the students in our class that never ______ a mistake even when it is pointed out to him.

It was already past midnight and only three young men ________ in the tea house.

The world economy has improved ________ since the end of last year，but major problems and challenges are not fully solved.