Bob can play _________basketball but he can’t play _____ piano.

Professor Mayer, ________by many as a leading expert in the study of changes to people’s EQs,recently announced the results of his study.

下列各组大写字母中，他们的小写字母只占中格的是________ .

In order to gain a bigger share in the international market, many staterun companies are ________tomake their products more competitive.[ ]

John sold the camera yesterday which his brother himas a birthday present from Japan.