I think it's great fun to () them.

I think it's great fun to () them. I think it's great fun to （ ） them.A join B join in C play D It's great fun to play with them.是什么句型?fun是什么词性?能多举几例吗? "I think it would be great." "I think it's going to be great I think it is a great fun.改错) Todat we ___ the Great Wall,I think it's great.A.visits B.to i think it's good for them对吗them fun,walk,I,moon,think,the,it's,to,on如何连句 I think it,s fun to fly kites in the park.变为否定句谢谢了, I think it's a great honour to be invited to visit your coun i think your advice is of great()to me and it's I think your advice is of great to me and it's .A.value,well