155. The teacher was a little angry because the students didn’t _____ their exercise books on time.

“Time _________ will never be found again!” I couldn’t help talking to myself because I was _________ being lazy.

The hunter calmly picked up his gun,took the aim and fired, ______ the beast.

The boy is used to obeying his mother’s order,and never her. [ ]

He ignored the neighbor’s request that ______ less noise at night