This part of the library is only ______ to people over eighteen years old.

The authorities declared that because of the war petrol was _____ and had to be rationed (定量供应).

 While intelligent people can often _____ the complex, a fool is more likely to complicate     the simple.

Although I can walk about, there is still a _____ pain in my leg.

Thinking that her daughter was doing her homework ,the mother left the room, _________.