—There are many trees in your garden.

—Yes. They _____ by my father ten years ago.

A. plant

B. planted

C. will be planted

D. were planted

对长期胃肠减压患者应特别加强的护理内容是（）

A．预防压疮发生

B．注意口腔护理

C．增加下肢活动

D．保持引流通畅

E．即使倾倒引流液