IV. Complete the sentences with the given words in their proper forms. (共8分)
44. Bob is a good friend of
mine
. (I)
45. It's
unfair
to make jokes of a disabled child. (fair)
46. We can use some
reference
books to teach ourselves. (refer)
47. Hundreds of police officers lose their
lives
each year. (life)
48. Everyone
knows
good scores require hard work. (knowledge)
49. Any type of daily goods is
available
in online shops in China. (avail)
50. The Party celebrated her
hundredth
birthday on 1 July 2021. (hundred)
51. Mrs Xu shouted
angrily
at her son for his behaving badly at school. (angry)