Which of the following sentences from the paragraph contain a positive adverb? Choose two that apply. a. We held our breaths as the shuttle floated to the ground like a butterfly. b. But even though we had the best technology in the universe, a trick of the eye caught us out. c. It appeared, however, that their trees were much, much shorter than ours, because the aliens were much, much shorter than we are. d. When we finally pulled ourselves together, we bent very, very low, and greeted our visitors warmly. e. I wondered whether they were equally surprised to meet us