问题

Wheat production _______________30% in the past ten years.

A:has been increased to
B:have been increased to
C:has been increased by
D:have been increased by;

正确答案是：

同类题型

Take care, ______ you will make a lot of mistakes in this paper.

（湖南省怀化市2014年高三第二次模拟考试）30. , and you will realize your dream of being successful.

The project________by the end of [ ]

You don’t seem to be quite yourself today What’s wrong? —Oh, I’m suffering from a cold Nothing serious, _____

ing to therecord reports, one of the rare animals, ______ crocodile, is in ______ dangerof dying out.