Question:
Tanya looked heavier than Megan because

Answer:
Continue the sentence -- Megan had lost more weight overall within the three month period.

Question:
Emily did not like to go to the flea market on Sunday but Sarah did because

Answer:
Continue the sentence -- Emily did not care about finding a good deal.

Question:
Ian was not free at the time of the party but Donald was because

Answer:
Continue the sentence -- Donald was very idle.

Question:
Monica went to Erin's house to use their computer for a paper since

Answer:
Continue the sentence -- Erin 's computer was working.