i think [ ] hard to learn english well if we don't work hard.a.it_英语解答

i think [ ] hard to learn english well if we don't work hard.
a.it b.that c.this 急

人气：103 ℃　时间：2019-10-01 09:33:33

解答

I think /find /feel/consider/make it +adj.+ to do sth
it 作形式宾语,代替后面不定式的真正宾语.