Unless you work as hard as you can, you won’t ______ your classmates.
| A．fall behind | B．keep on with |
| C．keep up with | D．catch up |
Tsinghua University, ______ in 1911, is home to a great number of outstanding figures.
| A．found | B．founding | C．founded | D．to be founded |
His singing career began to ______ in the late 1990s.
| A．get off | B．take off | C．put off | D．set off |
I hate ______ when the weather becomes freezing cold because there is no heater inside.
| A．this | B．that | C．it | D．so |
Is this the first time you_______ Beijing?
| A．have visited | B．was visiting |
| C．visited | D．has visited |
— Father, you promised!
— Well, ________. But it was you who didn’t keep your word first.
| A．So was I. | B．So did I. | C．So I was. | D．So I did. |