—Tom has played a lot of computer games recently.
—Yes，that might ________his failure in the midterm examinations.
| A．account for | B．answer for |
| C．ask for | D．stand for |
Mother wanted to be a good provider, a role she ______ since her marriage to Father．
| A．shoulders | B．shouldered | C．is shouldering | D．has been shouldering |
— Her father is very rich．
—________ She wouldn’t accept his help even if it were offered．
| A．What for? | B．So what? |
| C．No doubt． | D．No wonder． |
Helping others is a habit, _______ you can learn even at an early age．
| A．it | B．that | C．what | D．one |
Sam _____ some knowledge of the computer just by watching others working on it．
| A．brought up | B．looked up | C．picked up | D．set up |
—Can you believe I had to pay 30 dollars for a haircut?
—You should try the barber’s I go．It’s only 15．
| A．as | B．which | C．where | D．that |