You cannot take back your words _________ they are out of your mouth

Mr. Green is a short man _____ long hair.

The thief ______ computers ______ $20.000. [ ]

Some of the students are not sure ___ spelling the word, while others are not sure ___ the use of some grammatical rules

Anna doesn’t want ________ to help her do the work.She thinks she can do it ________.