—— Do you still remember the day when we went to the Great Wall?
—— I can’t remember it well, but＿＿＿＿＿＿sometime last autumn?
| A．might it be | B．could it have been | C．could it be | D．must it have been |
The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.
| A．to be invented | B．having been invented |
| C．invented | D．to have been invented |
--I didn't know this was a one-way street, officer.
| A．That's all right. | B．I don't believe you. |
| C．How dare you say that? | D．Sorry, but that's no excuse. |
--Which play shall we go and see?
| A．I'm afraid we can't |
| B．I don't think it's interesting |
| C．Yes, I quite agree with you |
| D．I'll leave it to you |
You _________think you're clever, but that doesn't give you the right to order me about!
| A．should | B．would | C．could | D．might |
--Jack's won _____________ holiday in London.
--_________ lucky fellow !
| A．a; A | B．the; The | C．a; The | D．the; A |