— Catherine, I have cleaned the room for you .
— Thanks. You_______. I could manage it myself.
| A．needn’t do | B．needn’t have done | C．mustn’t do | D．shouldn’t have done |
Instead of sand blowing everywhere, there is mud and water everywhere, ________ it difficult to travel from place to place.
| A．making | B．to make |
| C．having made | D．having been made |
The village seemed deserted, the only sign of life ________ some trees waving in the wind.
| A．were | B．was | C．being | D．to be |
My colleagues ________ the medical team and I found a vacant health centre, ________ we set up a temporary clinic center.
| A．on; where | B．for; which |
| C．on; which | D．for; where |
The weather forecast says temperature will fall sharply the day after tomorrow, when a snowstorm _________ to strike our city.
| A．expects | B．has expected |
| C．is expected | D．will be expected |
I feel greatly honored __________ to take on this role as a Goodwill Ambassador for the UN.
| A．to be chosen | B．to have been chosen |
| C．being chosen | D．to have chosen |