1. The boy is often found _____in reading books.
A. absorbs B. is absorbed C. absorbing D. absorbed
2. The first edition ________ in 1955 and ________ a best seller ever since．
A．was published；had been B．was published；has been
C．has been published；has been； D．had been published；had
3. The murderer was brought in, with his hands behind him.
A. being tied B. having tied C. to be tied D. tied
