这个应该选哪个?
* 17. ______ we would not have succeeded in our experiment.[ 1分]
A.Without you helped us B.But for you helped us C.If you had not helped us D.But you helped us
参考答案:c again
the correct B should be :but for your helping us
* 17. ______ we would not have succeeded in our experiment.[ 1分]
A.Without you helped us B.But for you helped us C.If you had not helped us D.But you helped us
参考答案:c again
the correct B should be :but for your helping us