1．Did you take out a________(专利)on your design?
2．I was surprised by the a________change of subject.
3．He drove his car with________(谨慎)．
4．She ate a light lunch in e________of a good dinner.
5．He buried the treasure to prevent its d________.
6．People who cannot d________between colours are said to be colourblind.
7．Will it be c________for you to come in the morning?
8．S________the chance, otherwise you'll regret it.
