Question

Not until ____ finished my homework ___ to watch TV.

A．I had; I began

B．had I; I began

C．I had; did I begin

D．had I; did I begin

Answer 1

C

考查倒装句。Not until 为否定词放在句首，使用部分倒装，从句不倒装，主句倒装。根据时态，所以选C。