When _____ my childhood, I get lost in happy memories of times now gone forever.
| A．looking out for | B．looking forward to |
| C．looking back on | D．looking down on |
Would you mind ____ because there’re so many children ____ here?
| A．smoke; play | B．smoking; playing |
| C．not smoking; play | D．not smoking; playing |
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 |