In my opinion, the idea of a family is much narrower than ________.
| A．that used to be | B．it used to | C．it was used to | D．it used to be |
Upon ______the classroom， I started thinking about my mother.
| A．leave | B．leaving |
| C．left | D．to leave |
Although it had been________ struggle for him to finish______ experiment, he enjoyed the result with________ satisfaction.
| A．the, an, / | B．a, the, / |
| C．a, an, a | D．/, the, a |
The map is one of the best tools a man has ________ he goes to a new place.
| A．whenever | B．whatever |
| C．wherever | D．however |
It is reported that the local police ________ the case of two missing children, but no much progress has been made up to now.
| A．looked into | B．will look into |
| C．have looked into | D．are looking into |
— I went to the live concert yesterday and didn’t know what happened in the school.
— ____________ .
| A．So did I | B．Nor did I |
| C．So it was with me | D．So I was |