Since it failed because of your fault, you should _____________.

When a storm is just ________，we must fix up the roof to prevent it from________.[ ]

It was the largest experiment we had ever had; it _____ six hours.

(2016 天津卷改编)I told her she shouldn’t swim after a whole night’s coughing, but she refused to ________ and insisted she go.

1– cupsof yogurt do we need –Two.