混合材料
参考答案:
掺入到水泥或混凝土中的人工或天然矿物材料。
John is not a man to count on, and it is very likely that the work ____ by the time he arrives here.[ ]
A. is finished
B. has finished
C. will finish
D. will have been finished
How much this album you?
A.do; pay
B.does; cost
C.do; spend
D.does; spend