【36】A．whetherB．thatC．howD．because

【C12】A．whetherB．thatC．whichD．why

_____she comes or not makes no difference.A、WhetherB、ThatC、What

A．whichB．whatC．howD．because

It is because English is very useful ________we study it hard.A: whyB: thatC: whatD: w

【C17】A．whenB．thatC．howD．what

【C18】A．thoughB．except thatC．becauseD．unless