Carelessness made him fall in his job _______.
A
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Sometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.
Although the trffic is not busy, he likes to drive at a_______ speed.
The college students in China are _______ from smoking on campus because this will do them no good.
Itisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.