1. Emergency line operators must always ________ calm and make sure they get all the information they need to send help.

A. stay             B. become           C. appear           D. grow

2. In Britain today women ________ 44% of the workers and nearly half the mothers with children are in paid work.

A. go up            B. bring up         C. hold up          D. make up

3. Although there are many uncertainties in our life ahead, our pioneering spirit will help us ____.

A. pull through     B. catch on         C. fold up          D. split off