Below the topsoil of the earth is the subsoil, _____ layer that contains stones mixed with a small amount of _____ organic matter.
| A．a; the | B．the; the | C．不填; 不填 | D．a; 不填 |
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 |
I'm afraid you have no _____ but to come along with us.
| A．possibility | B．permission | C．choice | D．selection |
I shall never beat John at tennis; we are clearly not in the same _____.
| A．set | B．band | C．group | D．class |