A. varying B. column C. be connected to D. outer space A. limit B. transporter C. that's D. scenery A. bulb B. brainstorm C. tug of war D. both A. refuse B. tap C. detail D. boat A. let out B. bounce C. solar system D. one another A. have to do with B. skim C. display D. burn to the ground A. put on B. no problem C. call off D. digital A. forest B. herb C. excitement D. environmental A. consist of B. attach C. system D. organ A. a bunch of B. spectacle C. eat the cake D. risk