My parents bought me alarm to let me get up early.

Why didn’t you know it was raining outside? 　　　　— Oh, I was _____ in thought at that time. [ ]

The police always take advantage of dogs’ ____ sense of smell to search for something.

下列各句中，没有语病的一句是

She_______ this book for 3 years,She______it in 2010.