未知题型 Americans eat ________ as they actually need every day.A) twice as much protein B) twice protein as much twiceC) twice protein as much D) protein as twice much

未知题型 It was very kind of you to do the washing-up, but you ________ it.A) mustn’t have done B) wouldn’t have doneC) mightn’t have done D) didn’tave to do

未知题型 John Dewey believed that education should be a preparation for life, that a person learns by doing, and that teaching must ________the curiosity and creativity of children.A) seek B) stimulate C) shape D) secure