—I am sorry I didn’t do a good job．
—Never mind．________, you have tried your best
| A．Above all | B．In all | C．At all | D．After all |
Many people in the west make ________ a rule to buy Christmas presents for their relatives and friends.
| A．this | B．it |
| C．that | D．them |
Has ________ been decided when we are to hold the sports meeting?
| A．that | B．he |
| C．it | D．what |
The doctor kept telling him that he mustn’t smoke, but ________ didn’t help.
| A．he | B．which |
| C．it | D．they |
Don’t leave your keys in the car. Someone might steal ________ 。
| A．one | B．that |
| C．this | D．it |
Computers must be of great use to ________ doing the scientific research.
| A．these | B．whoever |
| C．those | D．whomever |