—Do you play computer games? —Yes, I_____A、have. B、do. C、has.
---If you have any trouble, please call me. ---________.
---I lost my wallet on my way to school this morning. ---_______! You should be careful next time.
---Do you know ______ after Japanese earthquake and tsunami(海啸)? --- Sure. For three weeks.
--_______ beautiful day it is! Let’s go climbing today! ---Good idea!
---________ do you water these flowers? --- Once a week.