I'm sorry I couldn't get in touch with him before he left. I （ ） him earlier.
（A）had a telephone
（B）have phoned
（C）should be phoned
（D）should have phoned
When Andrew was in South Africa he （ ） go to that coffee shop at the corner every day.
（A）would
（B）should
（C）had better
（D）might
We should （ ） our environment.
（A）to protect
（B）protect
（C）be protected
（D）be protecting
