当你被介绍认识某人后, 你应该说: “____”.A. Good morning! B. Thank you! C. Nice to meet you!
—Would you mind my smoking here?—_______ It’s not allowed here.
—_______ do you have a sports meet at your school?—Once a year.
The old man was _______ sad _______ say a word when he heard the bad news.
—Do you often help your cousin with his English?—No. He learns English _______.
_______ beautiful flowers they are!