The important task will take Peter and me about four months to complete, so it will be a long time _____ we meet you again.
| A．after | B．when | C．since | D．before |
________ to the sunlight for too much time your skin will get burnt.
| A．Exposed | B．Having exposed |
| C．Being exposed | D．After being exposed |
It is a ______ dog, 16 or 17 inches tall from the shoulder.
| A．middle size | B．middle-size |
| C．mid-sized | D．middle-sized |
He came to my class every week, but his attitude _____ that he was not really interested in the subject.
| A．expressed | B．advised |
| C．suggested | D．explained |
The writer was so ________ in his writing that he forgot to flick the ashes from his cigar.
| A．concentrated | B．devoted |
| C．absorbed | D．fixed |
The sign reads, “In case of _____ fire, break the glass and push _____ red button.”
| A．/ ; a | B．/ ; the |
| C．the ; the | D．a; a |