She ____ the house the whole morning but it seems to be at least an hour before she finishes it.
| A．has been cleaning | B．cleaned | C．had cleaned | D．has cleaned |
Mike is always open ________ suggestions from his fellow workers
| A．for | B．to | C．on | D．into |
At the age of nearly seventy, he set off ________ a -mile journey ________ a bicycle
| A．for… by | B．for… on | C．to… on | D．to… By |
The report noted that nicotine breathed in by a smoker increased the need of the heart ________ oxygen
| A．to | B．on | C．in | D．for |
I have decided to go on holiday ________
| A．with myself | B．of my own | C．lonely | D．on my own |
Her hair became gray ____ the passing of the years
| A．in | B．for | C．at | D．with |