Swan Lake is a famous ballet in four acts, ________ on a German fairy tale.
| A．basing | B．based | C．bases | D．to base |
They are looking forward to ____ all over the world.
| A．travel | B．traveled | C．traveling | D．be traveled |
After the earthquake, almost all the windows are ____.
| A．break | B．broke | C．broken | D．breaking |
Her brother was ____ at her words.
| A．annoy | B．annoying | C．annoyed | D．beingannoying |
I’m sorry ____ you enough help.
| A．have given | B．of not giving | C．not to have given | D．to have given |
The result of the game is ____.
| A．frustrate | B．frustrating | C．frustrated | D．frustrates |