It is necessary people to have food and water every day．（ ）
A．ofB．forC．with
I've ordered some flowers for grandma and they will arrive _____ two hours．（ ）
A．inB．afterC．overD．for
Mrs. Smith showed the boys how to behave ________ like a gentleman at the dinner table．（ ）
A．happilyB．bravely
C．politelyD．differently
Betty kept silent at first _______ soon she joined the other girls， chatting and laughing．（ ）
A．soB．butC．orD．because
Did you find the way to the new library？
Sure． Mr. White gave me very ______ directions．（ ）
A．clearB．privateC．creativeD．common
The cheese cake ______ so good that I can't wait to eat it．（ ）
A．tastesB．feelsC．soundsD．smells