My son is one of the performers on the stage．

I am very impressed by his speech．

Throughout the world computers will be used more and more in the future．

The audience applauded loudly at the end of the speech．

There is a central-heating system in this hotel．

No matter how powerful the enemy seems, we must fight them to end．

The creative person is full of creative ideas．

The weather in Harbin is extremely cold．

In 1849, he went to England and made London the base for his revolutionary work．

My parents feel very proud that I am awarded a prize every semester for my good work．