．I will do what I can_________ the people in trouble .
| A．help | B．to help | C．help | D．helped |
I really don't know how to thank you, but for your help, I ________ my lost necklace.
| A．couldn't have found | B．mustn't have found |
| C．couldn't find | D．wouldn't find |
After ________ seemed an endless wait, it was her turn to enter the interview room.
| A．what | B．why | C．that | D．how |
I'm a bit green at ________ video editing, so it takes me ________ long time to edit these things.
| A．the; a | B．/; a |
| C．the; / | D．/; the |
When you are done with the book, go out for a walk or ________.
| A．whoever | B．wherever | C．whatever | D．however |
The girl thinks she is ________ of a star as she won the local beauty contest.
| A．something | B．anything |
| C．everything | D．nothing |