Changes of price in the 1990s the beginning of the fast development age of TV(标志)
昨天那则好消息使我们都高兴. (please)
.
知道如何有礼貌的邀请帮助是最重要的. (ask for)
My life has (变化)a lot in the last few years.
I just hid behind my father and never (说)anything.
Of the two boys,who do you think is more (仔细)?