请问:how could they have grown up healthily?是现在完成时吗?为什么不将have提前?原句是：Without the loving care and unrelenting work of their parents,how could they have grown up healthily?

how could they be improved? 请问:how could they have grown up healthily?是现在完成时吗?为什么不将have提前?原句是：Without the loving care and unrelenting work of their parents,how could they have grown up healthily? how many people they _____ see.A.can B.could they didn't know how they could do it.同义句they didn't know --------- --------- -----------it. How could How could they were think how they could get out. 这一句哪里有错 请问How long 后面可以接can、could 请问Joey could get lost and they could have to page us to go pick him Miss Wu showed her students how they could study English well改简单句 I don't thing anyoue could live without friend,nomatter how rich they are怎么翻译 They didn't know _____their holiday?A,how they can spend B,how could they spendC,how to spendD,how they will要说明原因噢,为什么?B怎么不对 英语翻译Chica cha ha ha Chica cha ha ha Chica cha ha ha Chica cha ha ha Chica cha ha ha Chica cha ha ha No matter what they tell us No matter what they do No matter what they teach us What we believe it's true No matter what they call us However people cannot but ___puzzzled,for they simply cannot understand ...(上接)how he could have made such a stupid mistakefeel feeling to feelhaving felt 请问选哪个 求详解 how could it How could I trust How could I love 一道英语情态动词单选题.-Where are the students?How could they keep us waiting for so long?-They started an hour ago and they ____ be here in 15 minutes,I think.A.might B.would C.should D.must请问选哪个呢 理由是什么