题目内容
— ________ are they doing? — They’re _________. A. What, run B. What, running C. Who, running
— ________ are they doing? — They’re _________.
A. What, run B. What, running C. Who, running
Who ________ running, Jim or Jack?
A. is good at B. is better at C. is the best
Who ________ running, Jim or Jack? A. is good at B. is better at C. is the best
