—Do you know the meaning of the new word? It puzzles me a lot.—I’ve no idea. But I think you can look it up in a .
The water in this river is harmful because It’s a ______ river.
I won’t go to see the film this evening because I _____ my ticket just now.
--- Where is your mother? --- She _______ to Sichuan on business. She has ______ there four times recently.
Rose feels lonely from time to time because all her friends____________.
--Nick, ____ you ____ my book? --Sorry, I came here just now .