真题练习

525.The new dictionaries are very useful.They ____ well and ___ already.

A.sell;have been sold out
B.sold;had sold out
C.sell;sell out
D.are sold;have been sold out

526.By the end of last year,another new theme park _____ completed in that area.

A.was being
B.would be
C.has been
D.had been

答案解析
525.答案是A;sell well畅销，注意不可用被动语态；sell out销售一空，此处应用被动语态。
526.答案是D;by the end of last year与过去完成时连用。