当你被介绍认识某人后, 你应该说: “____”。
-Where’s Lisa, Eric? -She __________ to the library.
I don’t remember when and where I __________ this umbrella.
-What’s his brother? -He is a teacher. He__________ maths at a school.
-Help yourself to some more meat. -_______________.
-Do you need my help, Mary? -_____________.