【小题1】use to/be used to
(1) He ________ going to bed at 10 o'clock every night, which was good for his health.
(2) Today's children are not like what we ________ be. They are much more confident.
【小题2】because/because of
(1) The sports meet was finally put off ________ the bad weather.
(2) Many people do exercise every week, ________ they have realized the importance of good health.
【小题3】prepare for/prepare
(1) Last Sunday, I gave our house a thorough cleaning and then ________ a wonderful meal and cooked a special dish for my wife.
(2) When people moved to a new country, they have to first ________ the new surroundings(环境)．