I think doing something for your parents is the best gift.此处为啥填do 的ing形式呀?

i think doing sth I think 后跟doing I THINk DOING吗是i think doing,还是i think do I think doing sports is great --------(fun) I think what you are doing is _______(waste) time. I think you are not worth doing so for me I think doing experiments is interesting.为什么think后用动名词 i don't like doing the dishes .i think it is (bore)i don't like doing the dishes .i think it is (bore) think+do还是doing think about doing sth. think doing something I think doing housework is an ___(please)job.I donot like to do it I think he can finish doing the work on time.改为同义句I think he will __ __ ___ finish doing the work on time. I think he can finish doing the work on time改为同义句,I think he will ___ ____ ____finish doing the work on time I think he can finish doing the work on time改为同义句,I think he will ___ ____ ____finish doing the work on time 高中英语语法问题（急需）I think it is no use doing. I think it no use doing.哪句对?这种叫做什么?求详解 don't worry,I think what we need to do______（选择题）Ais doing Bwas doing Cis done Dhas done 英语问句问：what do you think of sth?我可否回答：I think of doing sth is...用I think （that）do sth is...