__________，I think, and you will settle the problem.
| A．So long as you keep up your spirits |
| B．If you make your effort |
| C．Making great efforts |
| D．A bit more effort |
Traditionally，college students hold a graduation ceremony to encourage themselves before they ________ on their life journey.
| A．give up | B．settle down |
| C．get through | D．set off |
In much of the animal world，night is the time________for sleep－pure and simple.
| A．set aside | B．set down |
| C．set off | D．set up |
Team leaders must ensure that all members ________their natural desire to avoid the embarrassment associated with making mistakes.
| A．get over | B．look over |
| C．take over | D．come over |
Briggs will ________as general manager when Mitchell retires.
| A．get away | B．take over |
| C．set off | D．run out |
Oldfashioned phones matter when wireless networks ________in disasters.
| A．turn down | B．turn out |
| C．break down | D．break out |