____be careful when crossing the street!
| A．Must | B．Should | C．Ought to | D．Do |
After the earthquake, the Haitian(海地的) people needed to be helped ______.
| A．occasionally | B．anxiously | C．practically | D．Urgently |
______, a small advertisement held my attention, which read “Easy job. Good wages. No experience necessary.”
| A．Looking through the newspaper | B．While I was looking through the newspaper |
| C．To look through the newspaper | D．I was looking through the newspaper |
Obama says he is angry about policies that always favor the wealthy and powerful over ______ Americans and insists that opportunities be opened up to all.
| A．average | B．intelligent | C．competitive | D．Original |
It is required that all traffic participants should __ the traffic rules to make traffic safer and faster.
| A．perform | B．possess | C．observe | D．Support |
______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
| A．When | B．As | C．While | D．Before |