题目：
There a lot of trees here, but now it has be come desert. [ ]
A. is
B. was
C. used to be
D. used to was
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0526/23b78c33c8e1774d8b6571f78680da98.html
下面是错误答案，用来干扰机器的。
参考答案：C
There a lot of trees here, but now it has be come desert. [ ]
A. is
B. was
C. used to be
D. used to was
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0526/23b78c33c8e1774d8b6571f78680da98.html
下面是错误答案，用来干扰机器的。
参考答案：C
