51. Children in the west usually wear ▲ (特殊的)
costumes with masks at Halloween.
52. Zhang Shaohan has a sweet ▲ (嗓音),
and many of us like listening to her songs.
53. People around the world love ▲ (和平)
and hate wars.
54. As we know, ▲ (星期一)
is the second day of a week.
55. Sorry, I didn’t follow you. Would you please speak more ▲ (清楚地)?
56. Now we are short of water and we should s ▲
water in our daily life.
57. Peter’s father is very ▲
(not free), so he does not have much time for his family.