Question

We can see light in his office. He___________ be in his office.

A．can

B．can't

C．must

D．might

Answer 1

C

考查情态动词用法。A可能；B不可能；C一定；D也许；对现在情况进行推测使用：情态动词+动词原形；结合句意可知C正确。句意：我们能看见他办公室里的灯。和一定还在办公室里。