I'm trying to quit (A) the habit of staying up (B) too late though (C) it’s really difficult for me to do that (D).
A.quit (A)
B.staying up (B)
C.though (C)
D.to do that (D)

Try to (A) take advantage on (B) every opportunity that (C) comes your way (D).
A.to (A)
B.take advantage on (B)
C.that (C)
D.your way (D)

I had (A) a lot of (B) interesting experiments (C) during (D) my year in Africa.
A.had (A)
B.a lot of (B)
C.experiments (C)
D.during (D)

Public relation (A) is a strategic communication process that builds mutually beneficial (B) relationships between (C) organizations and their publics (D).
A.Public relation (A)
B.mutually beneficial (B)
C.between (C)
D.publics (D)

I didn’t have (A) sufficient enough (B) time to answer (C) all (D) the questions.
A.didn’t have (A)
B.sufficient enough (B)
C.to answer (C)
D.all (D)

The reason why (A) they don’t believe him anymore is (B) because (C) he is always lying (D).
A.reason why (A)
B.is (B)
C.because (C)
D.is always lying (D)

The medical check-up (A) should be repeated again (B) every week to make sure (C) you get well (D) after operation.
A.check-up (A)
B.repeated again (B)
C.make sure (C)
D.get well (D)

For (A) farther (B) information, please do not hesitate to contact (C) us (D).
A.For (A)
B.farther (B)
C.to contact (C)
D.us (D)

I was looking forward (A) to (B) a quite (C) evening at home (D).
A.looking forward (A)
B.to (B)
C.quite (C)
D.at home (D)

It was an interesting novel. I stayed up all night to finish it.
A.I stayed up all night to finish the novel so it was interesting.
B.So interesting was the novel that I stayed up all night to finish it.
C.Unless it were an interesting novel, I would not stay up all night to finish it.
D.Though it was an interesting novel, I stayed up all night to finish it.