One can always manage to do more things, no matter______ full one’s schedule is in life．
A．howB．whatC．whenD．where
The police were seeking more information to find out________ killed the rich merchant．
A．who it was thatB．who was it that
C．it was whoD．who was it
Had they known what was coming next, they _________second thoughts．
A．may haveB．could have
C．must have hadD．might have had
Studying Tom’s menu, I found that many of the items are similar to ________ of McDonald’s．
A．thoseB．onesC．anyD．all
People who do not smoke have less ______of suffering from lung cancer than those who do so．
A．potentialB．pattern
C．preferenceD．prejudice
This factory produced much dirty water, which resulted in a wide______of environmental problems．
A．branchB．range
C．speciesD．wave
