The economy of (A) Maine is based to a (B) great extent in its (C) forest, which over 80 percent of (D) its surface area.
A.economy of
B.to a
C.in its
D.percent of

I was (A) very busy lately since (B) the project (C) of designing the new collection (D) started.
A.was
B.since
C.the project
D.the new collection

She only had (A) a twenty-dollars bill (B) with her when (C) she landed at (D) Heathrow airport.
A.had
B.twenty-dollars bill
C.when
D.at

It is the recommendation(A) of many psychologists that a learner ought to use (B) mental images to associate words(C) and remember them(D).
A.the recommendation
B.ought to use
C.associate words
D.remember them

Although (A) no H7N9 avian flu infections (B) have reported(C) in poultry or humans yet, the likelihood of outbreaks in Viet Nam is high(D) .
A.Although
B.flu infections
C.have reported
D.is high

Gettysburg has been preserve(A) as a national historic monument because(B) it was the site of a major Civil War battle in which many lives (C) were lost (D).
A.preserve
B.because
C.many lives
D.were lost

Some people believe that (A) human being will never use away all (B) the natural (C) resources on (D) earth.
A.believe that
B.away all
C.natural
D.on

His eyes were light blue and in their innocence.
A.childless
B.childish
C.childlike
D.childhood

Now that he has retired, he lives partly on his pension and partly on the on his post office savings account.
A.salary
B.income
C.interest
D.wages

always in such a hurry, your work would be much better.
A.If you were
B.Unless you were
C.But for your
D.If you weren't