1 . Being a popular actor or model, a so-called glamorous job, can be a quite hard life, with a lot of travelling ________ heavy schedules.

A．on account of

B．on behalf of

C．in regard to

D．in relation to

2 . His new invention is beyond all praise and has quickly occupied the market _____its superior quality.

A．in terms of

B．by virtue of

C．on behalf of

D．on top of