Up to Tuesday's attack, the worst school shooting in the U. S. was in March 1998 in Jonesboro,______two boys, aged 11 and 13, shot and killed a teacher and four girls.
| A．while | B．where | C．when | D．then |
Next to biology, I like physics _______.
| A．better | B．best | C．the better | D．very well |
Anyone, whether he is an official or a bus driver, should be _______ respected.
| A．especially | B．equally | C．naturally | D．normally |
You’d better write down the phone number of that restaurant for future __________.
| A．purpose | B．reference | C．progress | D．memory |
The fact that so many people still smoke in public places ______ we may need a nationwide campaign to raise awareness of the risks of smoking.
| A．suggest | B．suggests | C．suggested | D．suggesting |
Sam has been appointed _______ manager of the engineering department to take ____ place of George.
| A．不填；不填 | B．the : 不填 | C．the; the | D．不填; the |