[ Conditional Sentences ]
Without your help, I couldn’t overcome the problem.
A. If you don’t help me, I can’t overcome the problem.
B. If you didn’t help me, I couldn’t overcome the problem.
C. If you hadn’t helped me, I couldn’t overcome the problem.
D. If you hadn’t helped me, I couldn’t have overcome the problem

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Grammar › ViewWhat do you ________ to do?
A. has
B. have
C. had
Tenses › View
The farmers ___ in the fields for hours before it started to rain.
A. work
B. worked
C. had been working
D. were working
