【C18】A．presumptionB．predicationC．preoccupationD．prerequisite

【C18】A．onB．beforeC．atD．in

【C18】A．merelyB．alwaysC．mainlyD．almost

【C18】A．illegalB．oddC．vainD．wrong

【C18】A．atB．toC．inD．of

【C18】A．confirmedB．ensuredC．assumedD．concerned

【C18】A．thatB．whichC．whatD．／