had been looking forward后面加to do 还是doing?

where have you been?we have been looking for you everywhere.i(worked out)a teaching plan in my office.为什么这里不填have been working out.had been working out; had been work out looking around the town he felt as though he （had been） away for ages 求详解 歌词what l ve been looking for I have been looking for a man. “What I've Been Looking For” Do you bring the picture?---Yes,I____it for a whole morning.A looked forB have looked for C have been looking forD had looked for为什么这道题不选BC? 2、All the money _____,john had to start looking for a job.A.was cost B.had cost C.having been spent D.having spent had been looking forward后面加to do 还是doing? I had been looking for the book for two days________I found it at last.A.until B.when C.before这3个词好难选呀,好像都行! 时间状语从句 I had been looking for this kind of herb for two months ___ I found it at last.选before,为什么不是when呢? 语法题目请解释分析谢谢为什么不选Ayour mother ( ) for u everywhere.where have u been?A.had looked B.has been looking C.looked D.was looking Has been looking for,just to wait for l have been looking for someone for a long time If he had been looking where he was going.looking 后为何不加at The date for the conference we had been looking forward_at last.A.to come B.to coming C.to came D.to have come looking round the town he felt as though he ______away for ages为什么选had been 这个语法现象怎么解释? Internet is used widely in China.是不是一定要说widely used?I was looking for her for ten minutes when a policeman came.用“was looking for”这个时态对不对?可不可以用“had been looking for”或者“looked for”?如果可以 You are the one I have been looking for!