—I heard they went skiing in the mountains last winter. —It       true because there was little snow there.

 When I lived with my roommates in the university, we ________ often talk into the night.

— Who’s that man in our classroom? It ________ be Mr. Brown. He is much taller.— You mean the man in white? He is an exchange student from England.

—I saw Kate in the park this morning.—It ______ her. She moved to Canada last week. 

You __________ buy a gift, but you can if you want to.