关于have an opportunity to do sth的问题为什么要to do好像有一句说have trouble doing sth,是doing有区别吗?

have an advantage have you an orange? have an effect on have an opinion about. Please have an apple() have an effect have an effect have an area of leave / have an impression have an outside have an excuse是什么意思 have an neck on Doyou have an u_______stamp have an amplitude of have an accident 关于英语的相邻原则each of the boys has /have an apple .哪个正确? “I have an important meeting to have have an effect have an affect on呢