Since the new speed limits ______,the number of accidents in the area has fallen strikingly.
| A.were introduced | B.introduced |
| C.have been introduced | D.have introduced |
Eating too much fat can ________ heart disease and cause high blood pressure.
| A.result from | B.contribute to | C.attend to | D.devote to |
Reducing the gap between the rich and the poor is one of the main ___________meeting the government.
| A.alarms | B.stresses | C. pressures | D.challenges |
How I wish we studied ________there are fewer exams .
| A.which | B.that | C.where | D.when |
On July 20, 1969, Neil Armstrong become the first man _________foot on the moon .
| A.setting | B.set | C.to setting | D.to set |
The timetable says the school bus _________ here for the first trip at 6:30 am.
| A.will leave | B.left | C.is leaving | D.leaves |