We must keep our classroom______.A. cleaning B. clean C. to clean
The thin woman was seen ______ down Huiwen Road at 10 p. m. last night
——_________ weather it is! We can't go boating on the Shuanghu Park this afternoon.——Don't worry. Let's go to the Science Museum instead.
Millie, could you help me _________ the map on the wall?
My sister is a person. She feels sure about her own ability.
——Could you tell me our new library will be completed?——In two years.