He injured his leg. ______, he couldn’t play in the game.
| A．Therefore | B．However | C．Besides | D．As well |
— Why are yo always making such mistakes, Jack?
— Sorry. I think I was not ________ this morning.
A. myself B. for myself C. to myself B. by myself
Many people have been ill with a strange disease these days, _______ we’d never heard of before.
| A．one | B．that | C．it | D．this |
His sudden look of fear made _____ clear that he had something to do with the matter．
| A．him | B．this | C．it | D．that |
The best job is ____which uses your skill in doing something with your interest in the subject.
| A．that | B．the one | C．one | D．it |
Teenagers are warned to be careful when making friends online, because when you can’t see a person, they could be __________.
| A．everybody | B．somebody | C．anybody | D．nobody |