She asked me if she __ type the letter?A shallB should
问题描述：
She asked me if she __ type the letter?
A shall
B should
答
should
时态应和主句谓语一致， 主句asked为过去式， 从句也应是过去式。
答
选B啊，又不是第一人称，怎么可能是A
答
B
should 是 shall的过去形式，前面是asked，前后时态一致。
答
should
shall只能用于第一人称，而这里she是第三人称
答
B
shall
将来时,用于第一人称：I shall be back in a minute.
用来表示征求意见：Shall I go with you?
用在第二、三人称,表示命令,警告,允诺等.He shall answer for it!
should应该
You should be responsible for yourself.
表猜测It should be true.大概有70-80%的把握.
should have done本应做某事,语气中有责备.
You should have come here earlier.你本来应该早点到的.
答
should