But for their help,we ( ) the program in time

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But for their help,we ( ) the program in time
A:had not finished B:could not have finished 括号中填哪一个,

要是没有他们的帮助,我们就不可能及时完成那个计划.
这是表示与过去事实相反的虚拟语气的动词形式.
If 虚拟条件句要用had+ 过去分词.这里已被But for 短语代替了,等于 If it had not been for their help.
主句要用 would/could 等+have + 过去分词
所以选B

But for their help,we ( ) the program in time BUT for their help,we ___the program in time. .But for their help,we_____the program in time. But for their help,we___the program in time.Acan not finish __thier help,we finished the work in time.A:because B:for C: Teenagers surf the Internet for( )in their free time ---your help,we can finish the task in time. 1.__ the work on time,they ask their friends for help The kids often help the old in their ( ) time 括号内填空 We like people for the qualties,but love them for their defe 英语翻译The first time in their time together,we are blessed whe We wouldn like to thank the following for their help and sup