2. 外语
  3. By the end of this month, I______here for 20 years.

By the end of this month, I______here for 20 years.

admin2011-04-07  52
问题 By the end of this month, I______here for 20 years.
选项 A、shall have been teaching
B、have taught
C、would have been teaching
D、am going to teach
答案A
解析 该题是语法结构题，考查动词时态的用法。该句子需要使用将来完成进行时态(shall/will +have been doing)。该时态表示动作从过去某一时间开始，持续到现在，将来很可能还会发生．如：They will have been talking for over an hour by the time Thomas arrives．等到托马斯来的时候，他们将已经交谈了一个多小时了。因此，根据题意和语法规则，选项A为最佳答案。
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