—What’ s the low-carbon life style like? . —Save       energy, produce        carbon.

Tian’anmen Square is one of ____________ squares in the world.

— What a traffic jam! I’m going to be late again.—Yes. The traffic now is _______than it used to be.

--Which month has______ days in a year?  ----February.

—We're doing a lot to protect our environment, but it is not good enough. —So we should try______ to look after it.