i think _____important to learn Chinses well A.this B.that C

I think _____important to learn English well A . I find-----not easy to learn math well A,this B,that C,what Tom found( )hard to learn Chiese well A.that B.it C.this Is （ ） difficult to learn English well?A.this B.that C.he I think——（this,that,it）is very useful to learn english well. I find __ interesting to learn English.A it B this C that D I think important to tell him the news.A,that B,this C,it D, i think it important ____ english well A learning B learn C I found_______important for us to learn English well.a.this I think ____ to learn English well. I think ___a bad habit to get up late.a.that b.it c.this d.i I think _____ is interesting to learn about animais A this B