1:He was thinking about the problem when an apple fell off the tree,__C__him right on the head.
A hit Bhaving hit C hitting Dand hitting 这个题为什么主语是apple不是he . 我认为逗号后的是做状语,状语主动或被动不是以主句的主语来判断主被动吗?
2,First__the rice by washing it,then___it in boiling water: 答案是 prepare cook 这个题一个以first引导,另一个用then引导来构成完整句,我想问的问题就是谁是主句谁是从句,first和then谁是并列连词。
3:I feel upset,for there are so many troublesome problems___C___.
A remain to settle B remained to settle C remaining to be settle D remained to be settle
这个题就不知道为什么用remaining to be settle而不是 remaining to settle. 我记得there is引导可以主动表示被动因为省略了for me ,比如there is a lot of work to do, 按照这个题目的结构,为什么settle又用被动??