Question

Which of the following complex sentences is formed correctly?

1 David works very hard his muscles then begin to cramp.
2 Since Jeremy knows his way through the woods. He obviously grew up there.
3 Though I studied all night, I still do not understand division.
4 Whenever Jessica feels lonely she looks up at the starry night sky.

Answer 1

3. Though I studied all night, I still do not understand division.

Step-by-step explanation: