The traffic accident _____ last Sunday morning.
| A．was happened | B．happened | C．had happened | D．happening |
“Mr. Zhu, you’d better too much meat . You’re already over weight .” said the doctor .
| A．not to eat | B．to eat | C．eat | D．not eat |
Computersin everyday life in this country before long .
| A．will be used | B．is used | C．will use | D．was used |
—I have bought a new watch .
—Where and whenyouit ?
| A．did ; buy | B．do ; buy | C．have ; bought | D．will ; buy |
Jack，please help me the picture on the wall.
| A．put off | B．put up | C．put into | D．put on |
As we all know ,Columbus America and Edisonlight bulbs.
| A．discovered ; invented | B．invented ; discovered |
| C．discovered ; discovered | D．invented ; invented |