题目内容
完成下句
Reasearch centre are set up ________(一个接一个).
one after anather
He had the advantage over the boys of ________(出生于富有家庭).
All the rooms ________(需要被打扫).
________(尽管我非常喜欢它), I will not buy it.
My bike is ________ new, even though I've had it a year.