【单选题】The chair looks rather hard, but in fact it's very comfortable .
【单选题】The chair looks very old,but it is very comfortable to_____.
【单选题】主控指令可以嵌套,但最都不能超过( )级。
【单选题】The chair looks very old, I want a new one _________ .
【单选题】The chair looks very old, but in fact it is very comfortable to _____. [ ]
【单选题】The chair looks rather hard but in fact it is very comfortable.
【单选题】主控指令可以嵌套,但最都不能超过( )级