_______ for many times, he still hopes to win.
| A．Failing | B．Failed | C．Having failed | D．To have failed |
It's very kind____ you to repair the bike ____ me.
| A．for.for | B．of,of | C．of,for | D．for,of |
We go to school ____ a bike.
| A．in | B．on | C．by | D．ove |
It happened ____ the Long March.
| A．during | B．in | C．at | D．for |
The window is never opened ____ in summer.
| A．but | B．except | C．except for | D．but for |
Nobody knows it ____ me.
| A．except for | B．except that | C．besides | D．but |