DuringtheyearthePresidentturnedhisattentiontoagricultureA.improveB.improvementC.improvingD.improved这里为什么选Cto在这时介词么?ThisistheproblematthemeetingnowA.discussedB.beingdiscussedC.tobediscussedD.

Question

During the year the President turned his attention to ____agriculture
A.improve B.improvement C.improving D.improved
这里为什么选C to在这时介词么?
This is the problem ____ at the meeting now
A.discussed B.being discussed C.to be discussed D.discussing
这里为什么选B 别的选项为什么错呢
The fireman rushed into the building ____by the fire in spite of danger
A.eaten up B.to be eaten up C.being eaten up D.having been eaten up
这儿为什么是C 其他的选项哪里错了?

Answer 1

1、turn one's attention to doing是固定搭配,把注意力集中于.
2、"now"用进行时,而问题是被讨论,因此选B.A是过去式,We discussed the problem yesterday.C是将来式,The problem to be discussed tomorrow is.D是现在进行式,We are discussing the problem.
3、冲进火场的瞬间就被火吞噬了,所以应该是同时发生的,这是一个从句.A吞噬,没有"be"被,错；B将来式,错；D现在完成进行式,应该是同时发生,错.