1.scrub

Surgeons began to scrub their hands and arms with soap and water before operating.

2.blanch

Simon's face blanched as he looked at Sharpe's blood-drenched uniform.

3.bicker

I went into medicine to care for patients, not to waste time bickering over budgets.

summary:

The effect of Norris's death didn't disappear. All the students talked about it. Hermione couldn't do anything but read. They had to finish their long composition homework, which was too hard for Ron.