题目内容
—________ when has the country been open to international trade?
—1978,I suppose.
A.Since B.In C.From D.After
A
【解析】由该句的谓语动词使用了现在完成时可知。
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题目内容
—________ when has the country been open to international trade?
—1978,I suppose.
A.Since B.In C.From D.After
A
【解析】由该句的谓语动词使用了现在完成时可知。