Hard SAT Grammar Question

Test Preparation SAT Preparation
1
  1. The eruption of Mount Vesuvius in A. D. 79 sent a column of tephra—dust, smoke, and pumice—nearly seventeen miles into the air { so that it } covered the city of Pompeii with over eight feet of pumice. A. so that it B. and so C. and D. and they E. so that they Correct Answer: A
2
  1. Around 230 million years ago, the west coast of what is now Europe and the bulge of northwestern Africa began to collide slowly with the east coast of North America, the coming together of the landmasses to form the super continent Pangaea. A. the coming together of the landmasses to form the super continent Pangaea B. the landmasses coming together to form the super continent Pangaea C. and with the landmasses coming together to form the super continent Pangaea D. the super continent Pangaea to be formed from the coming together of the landmasses E. forming the super continent Pangaea by the landmasses coming together Correct Answer: B
3
  1. MuchA of our knowledge ofB ancient Egypt has beenC derived from scenes carved and painted on the stone walls of tombs and temples andD from artifacts buried in the tombs. No errorE A. B. C. D. E. Correct Answer: E

why isn’t has been wrong

4

BUMP

5

@avneety
Maybe no one helps here because you did not state what you want exactly to be done with the first two questions? Which answers do you consider correct?In the last question it’s not very clear which segments are underlined in the original question; using brackets - as you did in the very first question - would help a lot.
Also - where are these questions from?

6

Precisely.