The number of giant pandas is becoming _____________ because there are fewer and fewer living areas.

Nowadays people are more concerned about theenvironment _______ they live

come and join US. Jimmy! —I’m sorry, butI’m really busy now. If I ____ time, I would certainly go.

nder if you have a single room for tonight.—Sorry, I’m afraid we have _________atthe moment.

Senior three students in our school spend their daysrushing from one exam to ______