I have been waiting for you since two hours.

Options

A. for you
B. No error
C. I have been waiting
D. since two hours

Answer

D

Explanation

Here, period of time is evident. Hence, for two hours is the right usage. for is used to specify the amount of time (how long) Since is used to specify the starting point Look at the examples given below: She.s been smoking for a long time She.s been smoking since she was in grade 5.