补全下列句子
上涨的水给庄稼造成很大的损害。
The rising waters ________ the crops.
她受雇在一家饭店做厨师。
She was _______ a cook in a hotel.
他对儿子的学习很不放心。
He was not ______ his son's study.
中国成功地主办了第29届奥运会。
China ______ the 29th Olympic Games.
奥巴马继布什之后担任美国总统。
Obama ____ Bush ____ president of the USA.