____ the workers’ working conditions, the boss will allow them to have a coffee break.
| A．Improving | B．To improve | C．Having improved | D．Improved |
After hospitals buy expensive equipment,they must try to __________ the money they had spent.
| A．recover | B．reduce | C．remove | D．receive |
The boy didn’t have any __________ but to do as his father had told him.
| A．idea | B．way | C．chance | D．choice |
—We’d like Chinese black tea,please.
—Sorry,we don’t __________ Chinese tea.
| A．do | B．make | C．serve | D．cook |
.Papa made a __________ of agreement though his face clouded at the mention of Grandma’s name.
| A．point | B．sign | C．example | D．mark |
—Some people believe that robots will take over the world one day.
—What if that is the ________?
| A．thing | B．result | C．case | D．end |