----Why are your hands so dirty?
----I ____________in the garden.
| A．was working | B．have worked | C．worked | D．have been working |
It's been a difficult time but, on the _______ side, I feel physically fine.
| A．primitive | B．original | C．unique | D．positive |
The first African-American president of the United States received a(n) _______ welcome in the African countries, where he was received as a returning son.
| A．romantic | B．bureaucratic | C．enthusiastic | D．optimistic |
With no better way to express feelings of love and _________, it's easy to see why everyone turns to the flower shop on Mothers’ Day.
| A．appreciation | B．inspiration | C．satisfaction | D．ambition |
In order to promote its brand, Harvard University has put a lot of money and time to launch an advertising ________.
| A．campaign | B．struggle | C．movement | D．promotion |
This is one of the happiest days ____ spent in my life.
A have ever been B that has never been
C which was ever D we have