---If each of us__________ the environment, the world will become more beautiful.---I agree with you.A. takes measure to protectB. make a contribution to protectingC. makes a contribution to protect
— did you tell her about the news? — By an e-mail.
--I can’t solve the math problem because it is too difficult. What should I do? -- _________ ask the teacher for help?
I really ________ Tina, we haven’t seen each other for about three years.
Sometimes we can hardly understand foreigners because they speak too _______.
I think _______ should be allowed to choose their own clothes.