A．SeenB．SeeingC．Having seenD．To see______ from the top ……

单项选择题—When can we discuss the problem — ______ when we can, we must prepare for it right now.

单项选择题—Did you get a job —No, I ______ , but it's no use.

问答题请设计一节课的教案，教学目的是让学生学会表达自己观点的某方法。

单项选择题The police still haven' t found her, but they' re doing all they ______ .

单项选择题It is reported that many a new house ______ at present in the disaster area.