A. vain B. even though C. air tank D. dried food A. conservative B. aware C. yes D. Barents A. after all B. drive C. touch D. caprice A. product B. as good as C. preposition D. entertainment A. November B. sweet C. challenging D. punctually A. increase B. swoop C. lunar probe D. breakthrough A. crowded B. sighting C. middle D. get away from A. Yes,please B. cast C. take notes D. gravity A. passenger B. order C. lose D. simply A. green B. be weak in C. unhurt D. polluted