.When_________different cultures, we often pay attention only to the differences without noticing many similarities.
| A.compared | B.being compared | C.comparing | D.having compared | 
It’s taking the trouble to explain a job fully to new employees.
| A.worth | B.worthwhile | 
| C.worthy | D.valuable | 
What will Sam when his wife dies?
| A.tend to | B.become of | 
| C.go against | D.lay off | 
People in Taiwan the President of the Philippines should seriously apologize for the shooting of a Taiwanese fisherman by its Coast Guard soldiers in the South China Sea.
| A.inspired | B.approved | 
| C.instructed | D.urged | 
As his son played a range of classical pieces from Mozart to Beethoven smoothly, the father swelled pride.
| A.of | B.with | C.into | D.from | 
I go to bed when I heard someone knocking at the door.
| A.was about to | B.had just to | 
| C.would | D.would like to |