题目内容
His English ________ a lot since he took the course.
| A.improved | B.was improved | C.has improved | D.has been improved |
C
试题分析:句意:自从他上了这个课程,他的英语提高了很多。since引导的时间状语,主句要用现在完成时,his English是单数形式,所以用助动词has,故选C。
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