问题

So difficult____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .

A:he have felt
B:have he felt
C:he did feel
D:did he feel

正确答案是：

同类题型

下列各句中，没有错别字的一项是(　　)

I really don’t know _________ I put my wallet after I paid the bill．

I’m going to take the driving test tomorrow.—________.

Can I borrow ______ money from you— Sorry ,I have ________ money with me.

I guarantee you __________ be rewarded for any useful clues to the missing document of the local Health Department.