It seems that living green is ______ easy and cheap. A small step can be rewarded with long-term benefits.

It is reported that ________ 8,000 torchbearers will take part in the London Olympic Torch Relay.

It’s always difficult being in a foreign country, ________ if you don’t speak the language.

-We need an immediate reply. –I see . I’ll send the paper to you_____.

Laura wanted to play a joke on her father but gave herself________by laughing.

The hurricane did damage to many houses and business buildings.     ,it caused 20 deaths.

The person who was taking photos asked the family to sit  ________and listen ________to his order.

Our bodies are strengthened by taking exercise.  ________，our minds are developed by learning.

We are taught that business letters should be written in a formal style           in a personal one.

---You effort is sure to pay __________
---Thank you for you encouragement.