Question

The committee __ over the problem among themselves for two hours.

A．has argued	B．has been arguing
C．have argued	D．have been arguing

Answer 1

D

試題分析：本題的關(guān)鍵詞是后面的時(shí)間狀語(yǔ)for two hours，該時(shí)間狀語(yǔ)常常和現(xiàn)在完成時(shí)，或者現(xiàn)在完成進(jìn)行時(shí)連用。表示動(dòng)作從過(guò)去發(fā)生一直持續(xù)到現(xiàn)在，而且還在發(fā)生。句義：在兩個(gè)小時(shí)里，委員會(huì)一直都在討論做過(guò)問(wèn)題。現(xiàn)在完成進(jìn)行時(shí)強(qiáng)調(diào)動(dòng)作的持續(xù)性。故D正確。