A. Tour de France B. playground C. perhaps D. prehistoric A. map B. fascinate C. future D. be worth doing A. layer B. low C. stray D. world A. permission B. potato chip C. go back to D. many A. hoverboard B. enemy C. useful D. ninety A. near B. abacus C. digest D. speed A. summit B. sob C. room D. chairman A. with B. athlete C. darling D. went camping A. undoing B. fox C. picture D. department A. behind B. might C. ahead of D. reinforce