---Don’t climb the ladder. It’s broken.
---______
| A．Why not？ | B．Don’t mention it. | C．OK. Thank you. | D．So what? |
Someone called me up in the middle of the night, but they hung up_________I could answer the phone.
| A．as | B．since | C．before | D．until |
The WTO can’t live up to its name _________ it doesn’t include a country that is home to one fifth of mankind.
| A．as long as | B．while | C．if | D．even though |
There were dirty marks on her trousers__________she had wiped her hands.
| A． where | B． which | C． when | D． that |
The English play__________my students acted at the New Year’s party was a great success.
| A． for which | B． at which | C． in which | D． on which |
I hate __________ when peope talk with their mouths full.
| A．it | B．that | C．these | D．them |