You very fast if you went from New York to Boston in six hours.
| A．should drive | B．would have driven | C．may drive | D．must have driven |
________the working efficiency，the boss allows the employees to have a coffee break.
| A．Improving | B．To improve |
| C．Having improved | D．Improved |
Could you show me the TV set you’d like________？
| A．to have repaired | B．repairing it |
| C．to have it repaired | D．to repair it |
Little Bob is often educated by his parents to be good and friendly to anyone even if ________.
| A．attacking | B．is attacked |
| C．to be attacked | D．attacked |
________twice a year，whether it is a car or a bus or a truck，is the rule that every driver must obey in this city.
| A．Examining |
| B．Examined |
| C．Being examined |
| D．Having been examined |
Yesterday a streetbeggar bought a lottery ticket purposelessly，________him a millionaire overnight.
| A．making | B．makes |
| C．to make | D．made |