2. 外语
  3. If you have really been studying English for so long, it’s about time you ______ able to write letters in English.[1999]

If you have really been studying English for so long, it’s about time you ______ able to write letters in English.[1999]

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问题 If you have really been studying English for so long, it’s about time you ______ able to write letters in English.[1999]
选项 A、should be
B、were
C、must be
D、are
答案B
解析 本句使用了It is about time．．．句型，在这个句型中，从句里谓语动词要用过去式表示虚拟。因此，本句的正确答案应该是were。
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