-- Someone's dropped ________ and poured it on the new carpet.
-- Who _______ it?
| A．a coffee cup; has done | B．a cup of coffee; did |
| C．a cup for coffee; did | D．a coffee's cup; has clone |
The reason ______he didn't come was ______he was ill.
| A．why; that | B．that;why | C．for that;that | D．for which;what |
This machine, ______for many years, is still working perfectly.
| A．after which I have looked | B．which I have looked after |
| C．that I have looked after | D．I have looked after |
This is the reason ______he didn't come to the meeting.
| A．in which | B．with which | C．that | D．for which |
The way ______he looks at problems is wrong.
| A．which | B．whose | C．what | D．/ |
I can never forget the day _______ we worked together and the day ______ we spent together.
| A．when; which | B．which; when | C．what; that | D．on which; when |