He has a good command ________ maths and plays an important part ________ our team.
The academicturnedTVcelebrity is reported ________ at a Kunqu Opera performance staged at Peking University.
It's almost common for a video game nowadays to have multiple endings ________ the players' choices during gameplay.
________ copies of Mo Yan's works will be on sale after his talk at the Press Conference.
Ben received an invitation to dinner, and with his work ________, he accepted it happily.
All reference books ________, he didn't find the key to the question.