Question

Tom pretended ______ it；but in fact，he knew it very well.

A．not to listen to

B．not to hear about

C．not to have heard about

D．not to be listening to

Answer 1

C

解析:

pretend not to have done假装没做过某事；pretend to be doing sth.假装正在做某事；pretend to do sth.假装做某事。由he knew it very well可知，应选C项。