Had they known what was coming next, they _________second thoughts.
A. may have B. could have
C. must have had D. might have had
Studying Tom’s menu, I found that many of the items are similar to ________ of McDonald’s.
A. those B. ones
C. any D. all
People who do not smoke have less ______of suffering from lung cancer than those who do so.
A. potential B. pattern
C. preference D. prejudice
This factory produced much dirty water, which resulted in a wide _______ of environmental problems.
A. branch B. range
C. species D. wave
Please tell me how the accident _______. I am still in the dark.
A. came up B. came out
C. came to D. came about
It is______ of him to set his aim high but do little, so he is always leaving things undone.
A. specific B. typical
c. flexible D. widespread
