Although not widely sold, that book is considered to be best book on the subject.
A.not
B.sold
C.best
D.the

I found my new contact lenses strangely at first, but I got used to them in the end.
A.my new
B.strangely
C.got used
D.in the end

________(41)
A.developed
B.brought
C.advanced
D.grew

________(42)
A.circumstances
B.occasions
C.incidents
D.situations

__________is the existence of a large number of different kinds of animals and plants which make a balanced environment..
A.extinction
B.biodiversity
C.habitat
D.conservation

- Kate: “ How lovely your cats are!” - David: “ ____________”
A.Really? They are
B.Thank you, it is nice of you to say so
C.Can you say it again
D.I love them, too

Peter was ejected after committing five personal _________ in water sport game yesterday.
A.mistakes
B.faults
C.fouls
D.errors

She ran ________ an interesting article about fashion while she was reading the newspaper.
A.after
B.cross
C.away
D.out

It’s a secret. You _________ let anyone know about it.
A.mustn’t
B.needn’t
C.mightn’t
D.may not

When Tet holiday comes, Vietnamese people often feel inclined to ________ their houses.
A.do up
B.do in
C.do through
D.do over