WHICH OF THE FOLLOWING BELOW GROUPS OF WORDS COULD BE L

WHICH OF THE FOLLOWING BELOW GROUPS OF WORDS COULD BE LABELED A CORRECT SENTENCE AND WHY?
When Sally entered the class and saw the students writing.
John goes to classes all morning then he goes to work.
May loves math but Henry loves English.
Running a mile before class every morning.
Comp I deals with essay writing however Comp II deals with research writing.
Faculty have their offices in the gym they will be there until spring break.
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