问题详情：
单句语法填空
1．I'm certain David's told you his business troubles____________, it's no secret that he owes money.
2．They____________(design) the new car for weeks, so they wanted to have a good rest, and take a shower.
3．A____________(heat) discussion is going on in the classroom.
4．They have decided to postpone____________(get) married until Feb. 14th next year.
5．With the all the guests____________(leave), the host and hostess stood up, ready to see them off.
6．It is you who are to apologize____________ us first.
7．You shouldn't have judged a person____________(base) on the clothes he wears.
8．I must say that it is ____________great honour to have been invited by you and your wife.
9．You'd better not____________(leave) so soon!
10．They____________(have) supper when an earthquake broke out.
【回答】
1．Anyway
2．had been designing
3．heated
4．getting
5．leaving
6．to
7．based
8．a
8．leave
10．were having
【分析】
1．考查副词。句意：我肯定大卫已经把他生意上的困难告诉你了。不管怎样，他欠钱已经不是什么秘密了。结合句意表示“不管怎样，无论如何”应用副词anyway。故填Anyway。
2．考查动词时态。句意：他们设计这辆新车已经好几个星期了，所以他们想好好休息一下，洗个澡。根据后文for weeks可知应用完成时，且“设计”发生在wanted之前，即“过去的过去”故应用过去完成时，且此处表示过去一段时间持续不间断地做某事应用过去完成进行时。故填had been designing。
3．考查形容词。句意：教室里正在进行激烈的讨论。修饰名词discussion应用形容词heated，表示“激烈的”。故填heated。
4．考查非谓语动词。句意：他们决定推迟到明年2月14日结婚。根据短语postpone doing sth.表示“推迟做某事”，故填getting。
5．考查非谓语动词。句意：客人们都走了，男女主人站起来，准备送他们。with的复合结构中，guests与leave构成主动关系，故用现在分词。故填leaving。
6.考查介词。句意：是你先向我们道歉。根据短语apologize to sb表示“道歉”，故填to。
7．考查非谓语动词。句意：你不应该根据一个人穿的衣服来判断他。短语be based on“根据”，本句中based做非谓语动词，故填based。
8．考查冠词。句意：我得说，你和你妻子邀请我，我感到非常荣幸。根据短语it is a great honour to表示“很荣幸……”，故填a。
9．考查固定短语。句意：你最好别这么快就走！根据短语had better not do sth.表示“最好别做某事”，故填leave。
10．考查动词时态。句意：地震发生时，他们正在吃晚饭。根据固定句式sb. be doing sth. when…表示“某人正在做某事，突然……”，此处根据后文broke可知应用过去进行时，主语为they，谓语动词用复数。故填were having。
知识点：过去完成进行时
题型：完成句子
