a object 还是 an object

a object 还是 an object () FormTemplate object用a还是用an? object object to doing 还是object to do 还是object doing?! Which of the following sentences has an object complement?A. an object kept as a reminder的同义词 describe an object you wore on a special occasion. object shaped like a ball recover an object from the chest depth money is not an object翻译 求英文翻译,An object with a weight of 20N is placed on an incline An object with an initial velocity of 4m/s moves along a str