Jack won the final competition to do weightlifting ( ) all his exertions.

(单选题)The point of regular exercise is to make your heart stronger (单选题)It is a bad ( ) for a student to gossip about others behi (单选题)It has always been our company's ( ) to encourage employe (单选题)The manger said nothing to the ( ), in addition to asking (单选题)In the sky, the helicopter turned at an ( ) angle before (单选题)A great deal has been done internally to ( ) the situatio (单选题)Clean and tidy clothes, in line with the temperament is good (单选题)Even though they are young, these students are equal in know (单选题)The problem is ( ) as difficult as you think, so we don't (单选题)In view of his good manner in admitting mistake, mother fina