33．_________ in some rural schools that the teacher is even unable to walk through the rows of desks．
| A．The classroom is as crowded | B．So crowded is the classroom |
| C．As crowded the classroom is | D．The classroom is such crowded |
—Is the dentist at work?
—I'm sorry to tell you he is on __________.
| A．an enough holiday long |
| B．a long enough holiday |
| C．a holiday enough long |
| D．a long vacation enough |
—Peter's rarely ill,__________ he?
—__________. He is quite healthy.
| A．is；No |
| B．isn't； Yes |
| C．has；Yes |
| D．hasn't；No |
The Smiths felt __________ about their daughter who had gone to the clinic for three hours.
| A．anxiously |
| B．anxious |
| C．eagerly |
| D．painful |
—I'm leaving for the doctor's this afternoon.
—OK, but make sure __________ when you leave.
| A．to lock up |
| B．for locking up |
| C．you lock up |
| D．you locked up |
The patient hasn't got a fever. In other words, his temperature is __________.
| A．common |
| B．normal |
| C．unusual |
| D．ordinary |