The elderly need special care in winter, as they are ______ to the sudden change of weather.
| A．sensitive | B．negative | C．flexible | D．sensible |
____by one of his fellow soldiers，the wounded man walked slowly across the field．
| A．Supporting | B．Supported | C．Support | D．Been supported． |
Jenny worked hard before the final examination，and it_______．She got an A．
A．showed off B．paid off C．put off D．took off
All the things __________ must be done well．
| A．worth to do | B．worthy of being done |
| C．worthy doing | D．worth of doing |
Follow your doctor’s advice,_____ your cough will get worse.
| A．or | B．and | C．then | D．so |
I spent five hours_____________ the book__________ I paid 10 dollars.
| A．reading; that | B．to read; for that | C．read; which | D．reading; for which |