Our bad living habits will destroy the earthOnly by changing________we live can we save the earth

—What are your rules for carry-on luggage, Madam?—You ______ only one piece of luggage on the plane, Sir. [ ]

Your broken English is all very good. How do you improve it —Thanks. Mrs. Wang always asks us to dialogues in our English classes.

It isn’t so much whether he works hard; thequestion is whether he works _____.

The pilot lost control with the military base,the plane crashed in the desert.