____the problem, it follows that we must develop a plan of action.
| A．Recognizing | B．Having recognized | C．Recognized | D．Having recognizing |
While crossing the street, an old man was knocked down by a car and badly .
| A．wounded |
| B．ruined |
| C．injured |
| D．harmed |
he worked hard, he still failed to finish the task in time.
| A．Although |
| B．Unless |
| C．Even after |
| D．Apart from |
When he was young, he used to hard at his lessons.
| A．devote to working |
| B．devote himself to working |
| C．be devoted to work |
| D．devoted to working |
They are just human creatures in a human environment, trying to themselves to a social situation
| A．adopt |
| B．adapt |
| C．adjust |
| D．admit |
_ much difficulty we may meet, we will finish the work in time.
| A．However |
| B．Whatever |
| C．Whichever |
| D．Though |