[答案]
ItookthehighspeedrailwaytovisitmygrandparentsonFridaynight.
[解析]
根据所给单词及图片提示,此处是(在周五晚上我乘高铁去看望我的祖父母。)I我,作主语;根据语境用一般过去时,take的过去式是took;took the high speed railway to乘高铁去;visit my grandparents看望我的爷爷奶奶;on Friday night在周五晚上。
故答案为:I took the high speed railway to visit my grandparents on Friday night.
[点评]
本题考查了"肯定句   ",属于"常考题",熟悉题型是解题的关键。