单选题
I found the subject very difficult ,and at one time thought I should have to give it up,but you directions are so clear and ____that I havesucceeded in getting a picture we all think pretty,though wanting in the tender grace of yours.
【正确答案】
C
【答案解析】[解析] 题干句意为：我发现这个任务很难，有一段时间我认为应该放弃它，但你的指导是如此清晰和______，以至于我成功地获得了一幅我们都认为漂亮的画，虽然这幅画缺少您的画作中的温柔优雅。C选项to the point为固定搭配，意为“中肯，扼要，切题”，代人原文后恰好符合文意。因此，正确答案是C。