Any packet __ properly will not be accepted by the post office．
| A．not to address | B．not being addressed |
| C．not addressed | D．not having addressed |
The failure was a big ________to him, but he wasn't discouraged and soon got as enthusiastic as ever.
| A．blow | B．issue | C．excuse | D．Factor |
It was________of Michael to inform us of his delay in case we got worried.
| A．careless | B．considerate | C．patient | D．Generous |
_______A common memory they all have their school days is the school uniform.
| A．of | B．on | C．to | D．With |
The research group produced two reports based on the survey, butcontained any useful suggestions.
| A． | all | B． | none | C． | either | D． | Neither |
we understand things has a lot to do with what we feel.
| A． | Where | B． | How | C． | Why | D． | When |