— Look at the bird over there! It’s so beautiful!
— Wow! It’s a rare crane. It appears in this area.
A．always B．usually C．seldom D．often
Ice is not often seen here in winter as the temperature normally stays zero.
A．up B．down C．above D．below
Our math teacher is very kind ______ he looks very serious.
A．because B．though C．if D．when
This isn’t my sister’s skirt. ______ is blue.
A．Mine B．His C．Yours D．Hers
Now the air in our city is ______ than it used to be. Something must be done to stop it.
A．good B．bad C．worse D．better
This type of MP5 is so expensive that I can’t ______ it.
A．afford B．spend C．cost D．pay
