—Kathy and her sister are so alike.—I can’t tell one from ____.
Whatever he does,once he sets up a goal,he will start pursuing it without ________.
As is well-known,the brain performs a very important ________,which controls the nerve system of the body.
—What do you think of the project put forward by the Blacks?—Considering its real ________,it will be well worth putting into practice,I suppose.
The two parties held the talk in a friendly ________ and reached an agreement.
We should look up to him as a shining example of ________ to duty.