—Peter, where did you guys go for the summer vacation?
—We ______busy with our work for months, so we went to the beach to relax ourselves.
| A．were | B．have been | C．had been | D．will be busy |
. Don’t leave your keys in the car. Someone might steal ________ .
| A．one | B．that | C．this | D．it |
we can avoid _________ with rest and a balanced diet.
| A．ill | B．to get ill | C．getting ill | D．be ill |
Expo 2010 Shanghai China __________ on both ba{007}nks of the Huangpu River in the city of Shanghai, China, from May 1 to October 31, 2010.
| A．is being held | B．is holding | C．will hold | D．holds |
. The farmers were more anxious for rain than the people in the city because they had more ______.
| A．at length | B．at last | C．at stake | D．at most |
As is often pointed out, knowledge is a two-edged weapon which can be used ______ for good or evil.
| A．similarly | B．widely | C．equally | D．properly |