贝克街流浪猫
根据时态last weekend可知是上周数学课和练习占用了空闲时间，所以应该用过去式，选择B。C选项是过去完成时，表示的是过去的过去的发生的事情，很显然与last weekend不符合。关于时态的题目，做的时候根据关键词来做会比较容易。
我叫德卢衣
题目我倒是没有，不过给你一些例题，我看后感觉挺有帮助的 一般现在时He draws a picture on the wall.--> A picture is drawn (by him) on the wall.一般过去时He drew a picture on the wall.--> A picture was drawn (by him) on the wall.现在进行时He is drawing a picture on the wall.--> A picture is being drawn (by him) on the wall.过去进行时He was drawing a picture on the wall.--> A picture was being drawn (by him) on the wall.一般将来时He will/is going to draw a picture on the wall.--> A picture will/is going to be drawn (by him) on the wall.过去将来时He would/was going to draw a picture on the wall.--> A picture would/was going to be drawn (by him) on the wall.现在完成时He has drawn a picture on the wall.--> A picture has been drawn (by him) on the wall.过去完成时He had drawn a picture on the wall.--> A picture had been drawn (by him) on the wall.现在完成进行时（这个比较特殊，它没有被动态，非要变被动的话，就是这样：）He has been drawing a picture on the wall.--> A picture has been drawn (by him) on the wall.过去完成进行时（同上）He had been drawing a picture on the wall.--> A picture had been drawn (by him) on the wall.一般将来进行时（同上）He will/is going to be drawing a picture on the wall.--> A picture will/is going to be drawn (by him) on the wall.过去将来进行时（同上）He would/was going to be drawing a picture on the wall.--> A picture would/was going to be drawn (by him) on the wall.将来完成时He will have drawn a picture on the wall.--> A picture will have been drawn (by him) on the wall.过去将来完成时He would have drawn a picture on the wall.--> A picture would have been drawn (by him) on the wall
冰雨茗香
这里并没有看到其他事情或者过去的时间。A: T 从来没这么粗鲁过。B: 他说了一些不该说的话，但是我觉得他不是认真的。如果你把 B的话换成 had said, 在别人听上去就是，B: 他说了一些不该说的话（在什么事情/时候之前）.如果你觉得 B 说的话在暗示 一个什么事情或者时候之前，你可以用 had said. 你在这里能看出另一个事情吗。
小妖精87623
先分析Ted has never been so rude!这个人的评论。这句话用现在完成时是因为说话者想要强调过去发生的动作对现在造成的影响，具体到这个场景，应该是指Ted的话让说话者感到生气，并感叹“Ted从来都没有对我这么粗鲁过！”
然后分析He _____ something he shouldn't have, but I guess he didn't mean that.
