__________ good exercise.
| A．Climbing hills is | B．Climbing the hill is |
| C．The climbing hills are | D．The climbing of hills are |
---Why did he___ that the man we met on the bridge was his father?
---God knows!
| A．refuse | B．deny | C．accuse | D．resist |
We were informed that the woods behind our apartment building would be removed to___ a swimming pool for the residents.
| A．take a chance | B．leave alone | C．break away from | D．allow for |
To be an astronaut, you must not only be strong in mind, but also be sound mentally and___.
| A．eventually | B．willingly | C．potentially | D．physically |
She’s such a smart ___ that she can type 150 words in one minute.
| A．typewriter | B．typist | C．surgeon | D．pilot |
--Come and lend me a hand! I can’t manage all this stuff.
---I’m sorry. ___ .
| A．It’s none of my business | B．Next time |
| C．I have only one pair of hands | D．No way |