—What’s the matter with Tom? He seems ____ sad. —His pet dog died.
She is going _____her friend ______her birthday party.
I could ________ my bed and ________ my clothes.
I used to ______ books after dinner, but now I am used to____ TV.
He cut off half his right arm______ a knife ______the dangerous situation.
---What are you going to do this weekend? -----I’m going to help _____the city parks with my classmates to make them clean.