With you helping me,the chemistry experiment was of great success and I really___your valuable advice
| A．appreciate |
| B．approach |
| C．appoint |
| D．approve |
I keep medicine on the top shelf, out of the children’s ______.
| A．reach |
| B．hand |
| C．hold |
| D．place |
The work calls for great care and patience, so you ______ to do it.
| A．can be too careful |
| B．can’t be too careful |
| C．can’t be too careless |
| D．can’t be careful |
______ he is doing an operation on a patient; please don’t disturb him.
| A．Right away |
| B．Right now |
| C．In no time |
| D．At once |
There has to ______ a well-developed system that can give people a warning when a tsunami is ______ the way.
| A．have；in |
| B．be；in |
| C．have；on |
| D．be；on |
—I hear Johnson ______ in the middle school.
—What? I can’t imagine him ______ as a teacher.
| A．teach；to work |
| B．teaches；working |
| C．teaches；to work |
| D．teach；working |