—Who is the girl in red in the photo? —She is my _____ Lily. She is my uncle’s daughter. A. sister B. aunt C. cousin
— I wonder if I can learn English well. — _______. All things are difficult before they are easy.
— I missed the beginning of The Voice of China yesterday evening. —_________! But you can watch the re-play tonight.
What method can you think of _________ with these broken computers?
Scientists are trying their best to_______ ways to treat the terrible disease caused by Ebola(埃博拉).
—The air pollution is terrible. — It will be worse ________ we take action to protect the environment.