A．decision B．agreement C．contract D．plan27().……

单项选择题24().

A．occasion
B．substitute
C．change
D．compromise

单项选择题26().

A．immediate
B．free
C．versatile
D．instant

单项选择题25().

A．life
B．alive
C．living
D．live

单项选择题21().

A．over
B．with
C．by
D．in

单项选择题22().

A．stimulated
B．animated
C．developed
D．interested

单项选择题23().

A．schoolwork
B．exercise
C．teamwork
D．research