51页17.The doctors are trying ----a new kind of medicine to cure the patient

分类: 作业答案 • 2021-12-28 18:20:38

问题描述：

51页17.The doctors are trying ----a new kind of medicine to cure the patient
A.using B.to use C.use 理由

答

trying+using首先不合理
语法错误排除.
这个句子是现在进行时态
单单use结构不完整.
故选b.
try to do sth.
固定搭配词组