Directions: Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer.
Unless you do not run fast, you cannot catch the bus.

Options

A. A) you do not
B. B) catch the bus.
C. C) you cannot
D. D) run fast

Answer

A

Explanation

.Unless. cannot be used with a negative word like no, not, never, etc. in a sentence because it becomes a case of superfluousness(not necessary). Hence, .Unless you run fast will be answer.