. --- My son is addicted to drugs. He isn’t hopeless, is he?
--- Yes, ______ he mends his way and starts all over.
| A．if | B．when | C．even if | D．unless |
Your letter will get ___ attention; they know you're expecting the answer.
| A．careful | B．common | C．instant | D．general |
There are some seemingly insignificant matters that, when _______ in time, can become bigger ones later on.
| A．not dealt with | B．not being dealt with |
| C．not to be dealt with | D．not having been dealt with |
—You seem to be familiar with London.
—I ______ there for three years. It’s great to be back.
| A．lived | B．had lived | C．have lived | D．live |
Children ______ to difficult situations are better at handling those _____ tasks.
| A．exposing; challenging | B．exposed; challenged |
| C．exposed; challenging | D．exposing; challenged |
The plan _____ just because people were unwilling to cooperate.
| A．broke up | B．broke down | C．broke away | D．broke off |