从每小题的A、B、C、D四个选项中，找出其划线部分与所给单词划线部分相同的选项。
limit

A．forgive

B．possible

C．island

D．arrival

feast

A．theatre

B．steak

C．wealthy

D．bean

obvious

A．custom

B．topic

C．envelope

D．improve

special

A．delicious

B．celebrate

C．discount

D．decision

exist

A．experience

B．expert

C．examine

D．explode