Whose French book is it?It be Lucy’s. Look! Her name is on the book!A. mustB. mus

问题补充：

--- Whose French book is it?

--- It be Lucy’s. Look! Her name is on the book!

A. must

B. mustn’t

C. might

D. can’t

答案：

(答案→)A. must

B. mustn’t

C. might

D. can’t

解析：must 必须，一定； mustn’t 禁止，不允许；might 可能，也许； can’t不能。句意：这是谁的法语书？结合下文，看，她的名字在书上。可知选A，一定是露西的。