— Would you like to visit the museum with us?— No, thanks. I it.
| A．visited | B．have visited | C．visit | D．was visiting |
That computer_____ me quite a lot of money.
| A．spent | B．cost | C．took | D．paid |
I never forget the days when I enjoyed ______ a good time in Beijing.
| A．have | B．to have | C．had | D．having |
We shall never give up ______ for even one day.
| A．studying | B．study | C．to study | D．studies |
Would you mind turning down the music? ______
| A．Yes , please | B．No , not at all |
| C．No , please | D．Yes .I do |
---What should I do If I had a million dollars?
--- If I ______ you, I would give it to medical research.
| A．am | B．was | C．were | D．will be |