Spacecraft “Discovery” has failed in the course of launch. —-_______? They have been preparing for the test.

There is ______ elephant in the zoo.______ elephant is from Africa.

China is larger than ________ country in Africa.

What cold weather！—Yes. But it’sunusual experience for us, we normally live in a hot place.

Sandy could do nothing but _________ to his teacher that he was wrong.