The simplest kind of plant, alike the simplest kind of animal, consists of only one cell.
A.simplest kind
B.alike
C.consists of
D.only one cell

__________ (46)
A.give
B.put
C.take
D.have

__________ (47)
A.yet
B.never
C.once
D.ever

__________ (48)
A.Concerning
B.Regarding
C.Depending
D.According

__________ (49)
A.strict
B.severe
C.strong
D.healy

When I __________ at my suitcase, I could see that someone _________ to open it.
A.look/try
B.looked/tried
C.looked/had tried
D.looked/trying

This is the first time my friend _____________ this old machine.
A.Used
B.had used
C.has used
D.have used

At the centre of the Earth ‘s solar system ___________.
A.lies the Sun
B.is where the Sun lies
C.the Sun lies
D.does the Sun lie

Unfortunately not all of us obtain our just ________ in this life.
A.wins
B.gains
C.demands
D.deserts

It is the recommendation of many psychologists __________ to associate words and remember names.
A.that a learner uses mental images
B.that a learner must use mental images
C.that a learner use mental images
D.mental images are used