It's our duty our hometown clean and beautiful.We must do something for it.( )
A.keepingB.keepsC.to keep
Some of the apples are bad,but I believe the rest sweet.
--- Can you tell me where Tom is? --- He ________ on the playground. A. plays B. playing C. is playing
-- _______ bad weather! -- So it is. A. What B. How C. What a
What _____ it is to go horse riding __________ weather!
________ great scientist Qian Xuesen is!