28. The officer was very concerned ________ the latest development in the case because he was concerned ________ it.
| A．about; in | B．for; about | C．with; for | D．in; with |
Deserts, dry areas with _____ no vegetation, cover more than one-third of the Earth's land surface.
| A．surprisingly | B．eventually | C．permanently | D．virtually |
Busy and successful as he was, the novelist was willing to _____ any promising young man and give him all the help he could.
| A．take up | B．pick up | C．make up | D．look up |
Children are likely to get _____ if no one cares about their upbringing.
| A．out of hand | B．out of order | C．out of place | D．out of work |
If you put too many potatoes in that paper-bag it will _____.
| A．fail | B．explode | C．crack | D．burst |
One-room schoolhouses can still be found in _____ areas where there are no other schools for many miles.
| A．disposed | B．deserted | C．isolated | D．abandoned |