【題目】They don’t think the problem so far they_______.（ ）

A．have had has been solved

B．have had been solved

C．have to solve been solved

D．have solved has been solved

【答案】A

【解析】

試題解析：分析句子，不難發(fā)現(xiàn)本句中有一個關(guān)鍵性的時間狀語so far，故用現(xiàn)在完成時；又由于這是一個省略了關(guān)系代詞的定語從句，同時，主語和謂語動詞之間是被動的關(guān)系，故句子的結(jié)構(gòu)可以重新組合看成是：So far, they don’t think the problem that they have had has been solved，可知選A。

句意：到目前為止，他們認為他們有的問題還沒有被解決。

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