托业考试

根据网考网考试中心的统计分析，以下试题在2017/10/30日托业考试习题练习中，答错率较高，为：58%
【单选题】 They ______ the launch of their new company only a year ago.
A．(A) announce
B．(B) are announcing
C．(C) have announced
D．(D) announced

网考网参考答案：D，答错率：58%
网考网试题解析：
The simple past of the verb is necessary because of the particular past time reference a year ago. Choice (A) is the simple present. Choice (B) is the present continuous. Choice (C) is the present perfect. 查看试题解析出处>>