The car ____and stopped at the red traffic light.

“I’m certainly more and more to theconclusion that Iraq has, ___they maintained（断言）, destroyed almost all of _____ they hadin the summer of 1991.” Bill said.

下列各项中划线词的意义和用法相同的一项是

Must I turn off the gas after cooking—Of course.You can never be ________careful with that.

It took us ________ to finish theexperiment on the monkey