Question

—Who’s in the room? — Mr. Brown is. He         a letter now.

A．writes

B．write

C．writing

D．is writing.

Answer 1

D

试题分析：句意：——谁在房间里？——布朗先生。他现在正在写信。根据时间副词now可知此处用现在进行时be doing, 因为主语是he, 故谓语用is writing,故选D。