______ made her put on weight so quickly was ______ she never limited her diet.

Water, which seems so simple and common, is ______ makes life possible.

—We were surprised to hear that the reason_______ she gave for her absence was______ her mother was ill.—Yes，we saw her mother was at the supermarket that morning.

 Although he has become wealthy, Mr. Wood remains ________ he used to be, modest and friendly.

 —I'll ask the teacher about the attributive clause. I'm very puzzled about it.—That's just ________ most of our classmates have doubt.