— Mary whose photo is it?—It be Lu’s. Those are her parents.A. canB. shouldC. mustD. ne

问题补充：

— Mary, whose photo is it?

—It be Lu’s. Those are her parents.

A. can

B. should

C. must

D. need

答案：

A. can

B. should

(答案→)C. must

D. need

解析：A. can能够B. should应该C. must必须 D. need需要；句意：玛丽，这是谁的照片？它肯定是露的，这是她的父母亲。故选C.