I am what I am!!

close down
1) (工廠 公司 商店等)倒閉 停業
ex. The stationer has closed down for 2 weeks.
2) 停止(某種活動)
ex. Television closed down for the night at thalf past eleven last night.

close in
1) 接近 迫近
ex. Darkness closed in on this city.
ex. We closed in upon the enemy.
2) 漸短 (白晝)變短
ex. The days are closing in.

close off
1) 使隔離
ex. Why was the area closed off to all traffic?

close up
1) 封住 堵住
ex. They closed up the opening in the wall with cement.
2) 癒合
ex. After 3 days the patient's wound began to close up.
3) (隊伍)靠攏
ex. The general ordered his soldiers to close up.