By the time Einstein was 14 years old, he ________ himself advanced mathematics.
| A．has taught | B．taught |
| C．had taught | D．was teaching |
Forty people got injured in a bus accident. Every ________ ambulance was rushed to the scene of the accident.
| A．enjoyable | B．suitable | C．acceptable | D．available |
The teacher stressed again that the students should not _______ any important details while retelling the story.
| A．break out | B．bring out | C．leave out | D．put out |
With all the exercises needed ______, he went straight home, __________.
| A．to finish; happy and relaxed |
| B．finished; happy and relaxed |
| C．finishing; happily and relaxed |
| D．to be finished; happily and relaxed |
The population of China is larger than ______ of any other country in the world.
| A．that | B．it | C．one | D．this |
— Do you know who left the lights on all night long?
— It seems that Zhang Peng is ______. He is the last one ______.
| A．blaming; leaving | B．blamed; left |
| C．to blame; to leave | D．to be blamed; to be left |