__________ the kids have left home, we’ve got a lot of extra space.
| A．As soon as | B．While | C．Now that | D． Before |
Certainly I posted your letter — I remember ______ it.
| A．posting | B．to post |
| C．to be posting | D．have posted |
Please remember _______ the plants while I’m away.
| A．watering | B．to be watering |
| C．to water | D．being watering |
Please excuse me _______ your letter by mistake.
| A．to open | B．to have opened |
| C．for opening | D．in opening |
After describing the planned improvements, she went on _______ how much they would cost.
| A．to explain | B．explaining |
| C．to be explaining | D．having explained |
The film star walked to his car, ______ a crowd of journalists.
| A．followed by | B．following by |
| C．to follow | D．to be followed by |