—Listen! Someone ____________ on the street.—Singing? He is crying. A. is singing B. sing C. sings
—Would you mind _______ in the classroom? —Sorry, I won’t do that again.
—Maria likes singing. Do you often hear her _______ after class? —Yes, I do.
—Miss Chen teaches _______ English this term. —You’re lucky. _______ is a very good teacher.
词义替换 Pandas are becoming less and less in recent(近来) years.
词义替换 Maria is good at playing basketball.