I"m awfully tired and can"t go any farther, Ted. Let"s have a rest, ______

单项选择题The young man ______ visited our school this morning is Maria s brother.

单项选择题The children ______ happily in the classroom when the teacher came in.

单项选择题The two girls look exactly ______ in appearance.

单项选择题I am very ______ to you for your help.

单项选择题He spoke English so well that I took it for ______ that he was an American.