A. hydrogen B. tea set C. collide D. April A. premise B. duty C. may D. take risks A. February B. How about C. pierce D. sari A. afternoon B. birthday C. Sweden D. catch up with A. user B. match C. check D. magnitude A. a kind of B. January C. carving D. remark A. faint B. deliver C. June D. minority A. infection B. add to C. kilometer D. July A. November B. crossword C. colourful D. precious A. sweet B. dividing line C. ox D. December