单项选择题
A.chance B.effect C.occasion D.advantage
The pioneers（）their journey after a short rest.A.assume...
单项选择题The pioneers（）their journey after a short rest.
A.assumed B.presumed C.resumed D.consumed
When she retired she did a lot of（）work for the Red Cro...
单项选择题When she retired she did a lot of（）work for the Red Cross.
A.valid B.portable C.prosperous D.voluntary
What these young men were doing（）a threat to the safety...
单项选择题What these young men were doing（）a threat to the safety of the whole neighborhood.
A.constructed B.contracted C.constituted D.contributed
