52. Because of all the arguments the meeting was a _______________(live) one.

lively

51. ___________________(necessary) is the mother of invention.

Necessity

50.The mayor presented a silver cup to the_____________(win).

winner

49.The microscope is a ________________(science) instrument.

scientific

48.The bad weather ___________________(encourage) people from attending the

parade.

discouraged

47. He is no____________(strange) to poverty.

stranger

46. It's___________(sun) today , let's go fishing.

sunny

45.That is unacceptable in our_______________(social).

society

44.Tom is really a ______________(trouble) boy.

troublesome

43.We had no _____________ (succeed) in finding a new flat.

success