__________your valuable help，we couldn’t have finished the experiment ahead of time．
A: If it were not for
B: Had it not been for
C: Were it not for
D: If it has not been for
A: If it were not for
B: Had it not been for
C: Were it not for
D: If it has not been for
举一反三
- All the tasks ______ ahead of time, they decided to have a dinner party to celebrate.( ) A: have been finished B: had been finished C: having been finished D: were finished.
- ______ for your help, we' d never have been able to get over the difficulties. A: If we had not been B: Were it not C: If it were not D: Had it not been
- _____ it _____ for your help, I couldn’t have made any progress. A: Were; not B: Had; not been C: Should; not been D: Did; be
- _______________ for your help, we'd never have been able to get over the difficulties. A: Had it not been B: If we had not been C: Had it not D: If it were not
- They couldn’t have completed their work in time if it _____ for your help. A: was not B: is not C: had not been D: has not been