__________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

He managed to keep his job_________the manager had threatened to sack him.
A.therefore
B.although
C.unless
D.despite

A.watched
B.promoted
C.invited
D.decided

A.intervention
B.necessary
C.intellectual
D.productivity

We went away on holiday last week, but it rained day in day out.
A.every single day
B.every other day
C.every second day
D.every two days