We know that a smile is usually a sign _____ people feel friendly and happy, but _____ we don’t know who the new person is?
A. that; what if B. when; what
C. when; how about D. if; how
Mr. Black Shanghai in a few days. Do you know when the earliest plane ________ on Sunday?
A. leaves; takes off B. is leaving; takes off
C. is leaving; is taking off D. leaves; is taking off
Many road accidents _____________ from careless driving, according to the recent reports from the police.
A. rise B. reduce
C. increase D. arise
Living in a fast-paced world, we _______ get left behind if we stop learning.
A. should B. dare C. may D. need
The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat.
A. being weighed B. to weigh
C. weighed D. weighing
________ is the influence of TV that it can make a person famous overnight．
A. So B. As C. That D. Such
