He is trying to_____the familys expenses.

He tried to solve the problem, but he （quick) ________ gave up.

He believes work is__________for the welfare of family．A.crucialB.radical###SXB##

According to Savage, the manager of 3M, videoconferencing is ______ .A．expensive in instal

The Segway is a vehicle______.A．that is expensive to useB．that is environment－friendlyC．de

______, the professor is still trying to learn a new language.A．However he is oldB．Old as

He tried to______with the shopkeeper for the watch.A．extendB．objectC．bargainD．pause