（） aeroplanes in this company are Boeing planes.

单项选择题You must （）your bad habits.

A.give off
B.give up
C.give out

单项选择题Mary is not here. She （） to Paris.

A.went
B.has gone
C.has been

单项选择题This question was （）difficult that no one could answer it.

A.too
B.very
C.so

单项选择题Hurry up，（）you’ll be late.

A.but
B.and
C.or

单项选择题Don’t talk（）that.

A.as
B.at
C.like