Whenever you walk on the ice, ________ that it is solid and safe enough.

[　　]

On receiving the order, the workers ________ the bridge repair work.

[　　]

Don’t be angry with him. He made the mistake ________.

[　　]

The thief ________ away when the police arrived.

[　　]

The tower clock was ________ eleven when I was walking towards home.

[　　]

Can you ________ Mary becoming famous as an artist?

[　　]

--Do you think the Stars will beat the Bulls?

--Yes! They have better players, so I ________ them to win.

[　　]

Old habits are hard to ________.

[　　]

Things here are getting better and better. They are ________ coming back soon.

[　　]

I was so busy that I couldn’t ________ a holiday this summer.

[　　]