Whether by accident or ___________, he arrived too late to help us.

 -- Why was the driver taken to the police station last night? -- Because he refused to ______ to a blood-alcohol test and attacked the police.

(2013·安徽合肥三模)The twin sisters were shopping for hours on Women's Day and managed to ________ bags of bargains.

Smoking is so harmful to personal health that it kills ________ people each year than    automobile accidents.                                                         

----- The tomato juice left a brown ______ on the front of your coat.----- No matter . Cloth of this kind ________ easily .