A. imperceptible B. sand C. heart D. nothing A. stay in touch with B. pay attention C. most D. phenomena A. clothes B. remaining C. badly D. exchange A. man B. windy C. various D. Halloween A. firecracker B. sunny C. in fear of one's life D. able A. Houston Rockets B. rank C. too D. survival A. sadly B. firm C. motor D. come along A. South Africa B. financial C. close D. breadfruit A. colourful B. Guests do not go in C. twice D. snorkelling A. armchair B. tourist C. give speeches D. minimum