根据句意和汉语提示写出单词，完成句子。
【小题1】The restaurant is famous for its nice food, so it’s always full of ________ (顾客) at weekends.
【小题2】My weight has ________ (增加) by up to 3 kilos since I gave up running.
【小题3】Under the dome, the documentary by Chai Jing takes a close look at the ______(受污染的) world.
【小题4】As we know, the Communist Party always _________ (服务) the people wholeheartedly.
【小题5】Chinese is ________ (广泛地) used in the world because our country is getting stronger and stronger.