Question

Susan decided not to work on the program at home because she didn’t want her mother to know what she _____.

A．has done

B．had done

C．was doing

D．is doing

Answer 1

C

考查时态：句意：Susan决定不在家里从事这个工作，因为她不想她的妈妈知道她做得事情。说明是过去正在做的事情。选C。