摘要： It took me a long time before I was able to fully appreciate what they for me. A. had done B. did C. would do D. were doing [解析]:A.考查过去完成时和一般过去时的区别.整个句子时态用的是一般过去时.我能够表示感谢就已经是过去.而他们对我的帮助则是过去的过去.因此选A.
网址：http://m.1010jiajiao.com/timu3_id_2552570[举报]
It took me a long time before I was able to fully appreciate what they__________for me.
A. had done B. did C. would do D. were doing
查看习题详情和答案>>It took me a long time before I was able to fully appreciate what they __ for me.
| A．had done | B．did | C．would do | D．were doing |
It took me a long time before I was able to fully appreciate what they __ for me.
A．had done B．did C．would do D．were doing
查看习题详情和答案>>
It took me a long time before I was able to fully appreciate what they ______ for me.
|
A．had done |
B．did |
C．would do |
D．were doing |
查看习题详情和答案>>