Instruction: Underlined parts of the following sentence may contain error(s) in grammar, diction, usage or idiom. Choose the underlined portion that is incorrect. If there is no error, select (E). The boy who (A)used to be my room-mate (B) at college (C)has called me up (D)in the last few days.(E)No Error.
A. (A)used to be my room-mate
D. (D)in the last few days.
Explanation: (C) The phrase "in the last few days" indicates a specific past time frame, so the simple past tense should be used instead of the present perfect. It should be "called me up".
