_____ the police thought he was the most likely one, since they had no exact proof about it,they had to set him free.
| A．As long as | B．If only | C．Although | D．As though |
.
Our success depends ______ everyone works hard or not.
| A．upon whether | B．on that | C．in which | D．on why |
.
______ in bed, the boy ______ to his mother saying that he had a bad headache.
| A．lying; lay | B．lied; laid | C．Lying; lied | D．Laying; lain |
.
With a ______ expression on her face, she is _______ about what to do next.
| A．puzzled; puzzling | B．puzzling; puzzled | C．puzzled; puzzled | D．puzzling; puzzling |
.
He has three brothers, ______ is a doctor.
| A．all of them | B．all of whom | C．both of them | D．none of whom |
.
The old man is familiar ________ the old village.
| A．with | B．in | C．to | D．for |