You can't be careful enough to drive on the __________ road in __________ weather.
After the earthquake, the Haitian(海地的) people needed to be helped ______.
______, a small advertisement held my attention, which read “Easy job.Good wages.No experience necessary.”
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.
It is required that all traffic participants should___the traffic rules to make traffic safer and faster.
______ 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.