When you do exercises, your heart works better. It is able to______ more blood while beating more slowly.
| A．produce | B．pump | C．increase | D．bump |
Energy is ____ makes one work.
| A．what | B．something | C．anything | D．that |
I know nothing about the accident except _____ I read in the paper.
| A．that | B．for | C．what | D．不填 |
—I’ve got an “A” in the examination.
—That’s a good ______. You will surely win a second.
| A．result | B．news | C．start | D．idea |
. In order to learn the _______ of the family business, Bill took a job as messenger boy in one of the offices.
| A．ins and outs | B．dos and don’ts | C．heads and tails | D．p’s and q’s |
Electricity, like other forms of ______, has greatly increased in price in recent years.
| A．pressure | B．force | C．strength | D．energy |