A. sit-up B. foresight C. no doubt D. popcorn A. vacation B. beach C. advertisement D. chemical A. selfless B. biogas C. stranger D. convulsive A. excessive B. ignorance C. convenient D. after all A. mattress B. Space Museum C. system D. camping A. ow B. fall in love with C. hardly D. Kituro A. dozen B. tonight C. sweet potato D. call for A. cherry B. chimp C. notebook D. blood A. Korea B. steam C. give sb a ride D. salaam A. hooray B. in top form C. produce D. thus