Allen had to call a taxi because the box was _______ to carry all the way home.

A cook will be immediately fired if he is found _______ in the kitchen.

One-third of the country____ covered with trees and the majority of the citizens______ black people.

Having a trip abroad is certainly good for the old couple, but it remains____ whether they will enjoy it.

Mencius believed that the reason why man is different from animals is______Man is good.

_____ with so much trouble, we failed to complete the task on time

It’s reported that the United States uses______ energy as the whole of Europe.

The rare fish,_____ from the cooking pot, has been returned to the sea.

----- I’m taking my driving test tomorrow.

----- _____!

Some insects_____ the colour of their surroundings (环境) to protect themselves.