Question

--Was that the dean who walked by? -- __________ .

A.It must be that
B.It must have been
C.He must be it
D.That must have been it

Answer 1

【答案】：B
考查强调句。分析句子结构可知，此题为一个强调句的疑问句。句意为“刚刚走过去的是院长吗?”由选项可知，此处为肯定回答。对过去事情或状态的肯定推测为must have done结构。故选B。