问题

How did you work out the difficult chemistryproblem— I worked it out by ________.
A:working witha group
B:think veryhard
C:ask theteacher for help
D:doing oneself
B:think veryhard
C:ask theteacher for help
D:doing oneself
正确答案是:
同类题型
Please turn off the light. —OK, Mom. I won’t leave the room ______ the light_____.
The little boy ________ for the apples on the tree, but of course he was not tall enough. [ ]
After reading the report, I found ____ important to do something to protect the birds in the wild.
Paper produced every year is ________ theworld’s production of vehicles.