根据下列句子及所给汉语注释，在空缺处写出各单词的正确形式（每空一词）。
Ningxia has some fantastic sights, ___________ (包括) the Sand Lake and Shapotou.
If I had a million dollars, I’d give it to ____________ (医学的) research.
You’d better have a first-aid book on a nearby ____________ (书架) in your home.
Doctors say that the risk of cancer can ___________ (增加) by eating burnt food.
I don’t think students should be ____________ (允许) to bring mobile phones to school.