A. amass B. fix C. co-founder D. gum A. exhibition B. spirit C. fill with sth D. potato A. theory B. for C. do homework D. ghost A. pause B. connect C. marriage D. penfriend A. damage B. fertilizer C. titanic D. free of charge A. agree with B. general C. logically D. destruction A. repeat B. quotation C. involved D. stop doing A. insurmountable B. explorer C. overpopulated D. Ms A. go home B. close C. wall D. disagree with A. sausage B. break away C. sympathetic D. video