We do have the most supportive parents and teachers, ________will make a difference to our study, unless all of us make every effort .
| A．none of them | B．all of them |
| C．none of whom | D．all of whom |
We most prefer to say yes to the of someone we know and like.
| A． | attempts | B． | requests | C． | doubts | D． | promises |
I don’t become a serious climber until the fifth grade, ______ I went up to rescue a kite that was stuck in the branches of a tree.
| A．when | B．where | C．which | D．why |
Joe is proud and ______, never admitting he is wrong and always looking for someone else to blame.
| A．strict | B．sympathetic | C．stubborn | D．sensitive |
An average of just 18.75cm of rain fell last year, making ______ the driest year since Californiabecame a state in 1850.
| A．each | B．it | C．this | D．one |
The paper is due next month, and I am working seven days ______ week, often long into______night.
| A．a; the | B．the;不填 | C．a; a | D．不填；the |