It's not easy to change habits, ________ with awareness and self－control, it is possible.
A．for B．or
C．but D．so
Cathy had quit her job when her son was born _______ she could stay home and raise her family.
A. now that B. as if
C. only if D. so that
The meaning of the word "nice' changed a few tines it finally came to include the sense "pleasant."
A. before B. after
C. since D. while
Lessons can be learned to face the future, ________ history cannot be changed.
A. though B. as
C. since D. unless
I'll be out for some time. ______ anything important happens, call me up immediately.
A. In case B. As if
C. Even though D. Now that
_______ you start eating in a healthier way, weight control will become much easier.
A. unless B. Although
C. Before D. Once
