英语小说网

Joy: He must have been at home.

Andy: He can't have been ill. He must have been tired.

Joy: It must have been your new hat.

Joy: He must have been reading.

Andy: It can't have been my new hat. It must have been my old hat.

Andy: He can't have been the youngest. He must have been the oldest.

Joy: It must have been the 20th.

Andy: She can't have been Danish. She must have been Swedish.

Andy: He can't have been a dentist. He must have been a doctor.

Andy: She can't have been forty. She must have been fifty.

Joy: She must have been forty.

Joy: He must have been a dentist.

Joy: He must have been the youngest.

Andy: It can't have been the 20th. It must have been the 21th.

Joy: She must have been Danish.

Andy: He can't have been at home. He must have been at school.

Joy: He must have been ill.

Andy: He can't have been reading. He must have been sleeping.