Our maths teacher often gives us ______on how to learn maths .
| A．some good advices | B．some good advice |
| C．an advice | D．some pieces of good advices |
He plays ____________ piano every day to become the champion of his country.
| A．the | B．a | C．/ | D．an |
It is impossible___________ so much work in an hour.
A. finish B. to finish C. finishing
My family went on a _________ trip last month.
A. two weeks B. two-week C. two-weeks
My family went on a _________ trip last month.
A. two weeks B. two-week C. two-weeks
While you _________ your trip, I was busy ________ for my exams.
A. enjoyed, preparing B. were enjoying, preparing
C. were enjoying, to prepare