The media can often help solve problems and draw attention to situations ______ help is needed.
| A．when | B．how | C．which | D．where |
The academicturnedTVcelebrity is reported ________ at a Kunqu Opera performance staged at Peking University.
| A．to boo(喝倒彩) | B．to being booed |
| C．to have been booed | D．to be booed |
It's almost common for a video game nowadays to have multiple endings ________ the players' choices during gameplay.
| A．depends on | B．depending on |
| C．depended on | D．to depend on |
________ copies of Mo Yan's works will be on sale after his talk at the Press Conference.
| A．Signing | B．Sign |
| C．Signed | D．To sign |
Ben received an invitation to dinner, and with his work ________， he accepted it happily.
| A．finished | B．finishing |
| C．having finished | D．was finished |
All reference books ________， he didn't find the key to the question.
| A．being searched | B．searched |
| C．to be searched | D．were searched |