__________ out of work for a few months, mother took up the job of waiting on patients in the hospital.
| A．To be | B．Being | C．Having been | D．Having |
Food safety is _______ important, so the government spares no effort to prevent food pollution.
| A．highly | B．reasonally |
| C．strongly | D．naturally |
When he woke up, he found his watch gone. It seemed that he suspected me ________ it.
| A．to steal | B．steal |
| C．of stealing | D．stealing |
We must _________ from old convention（传统）and adopt as many modern techniques as possible.
| A．put away | B．break away |
| C．get away | D．turn away |
________ 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 |