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
A: was not
B: is not
C: had not been
D: has not been
举一反三
- __________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
- ______ it______ for your help,I couldn't have made any progress. A: Had; not been B: Should; not been C: Did; not been D: Not; be
- _____ 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
- Had it not been for his help, I ______ the task within such a short time. A: can’t complete B: couldn’t complete C: wouldn’t complete D: couldn’t have completed
- The task ___ by the time you come back. A: has been completed B: will have been completed C: will complete D: has completed