temporary information

He told me that he had handed in his exercise book ______ .
A. two days ago
B. after two days
C. two days before
D. in two days



by intuition, i chose A.


the right answer is.................









C.




[Word Choice]

Use ago to say how much time has passed from the time something happened to now, the time of speaking
• I saw her a few minutes ago.
• We went to Madrid two years ago.

Use before to say how much time passed from the time something happened to a time in the past
• We went to the same hotel where we stayed two years before.

Previously is used in the same way, but is more formal
• The meeting was a follow-up to one that had been held four days previously.

GRAMMAR
!! Do not use a preposition ('at', 'in', 'on' etc) before a phrase with ago
• They first met fifteen years ago (NOT at/in fifteen years ago).
!! Do not use 'since' or 'before' with ago
• I came to the USA two months ago (NOT since/before two months ago).
!! Use the past tense, not the present perfect, with ago
• I started (NOT I've started) a new job a few weeks ago.