Question

---Whose book is this?---It________ be Ning’s because it has her name on it. A．must B．can’

---Whose book is this?---It________ be Ning’s because it has her name on it. A．must B．can’t C．might D．could

Answer 1

A

试题分析：句意：这是谁的书？肯定是宁的书，因为上面写着她的名字。Must在表推测的时候，表示肯定；can’t 不可能；might和could都表可能。结合题意选A。