—Can we ski on this mountain?
—Of course.However, at no time _______ you do so alone.
| A．could | B．might |
| C．need | D．must |
. There were no tickets _____ for Friday's performance.
| A．preferable | B．possible | C．considerable | D．available |
. There were no tickets _____ for Friday's performance.
| A．preferable | B．possible | C．considerable | D．available |
. Today, housework has been made much easier by electrical _____.
| A．facilities | B．appliances | C．instruments | D．equipment |
He _____ his engagement just before the wedding.
| A．broke out | B．broke away from | C．broke off | D．broke up |
_____ the English examination I would have gone to the concert last Sunday.
| A．In spite of | B．But for | C．Because of | D．As for |