I don't know______ he lost his gold watch yesterday.
| A．where is it that | B．where was it that |
| C．where it was that | D．where is that |
_________ he was the last man I wanted to see，I did all that I could to help him．
| A．As | B．Now that | C．While | D．As though |
May 12th，2008 is a special day，___, I think，that will be remembered by the Chinese forever．
| A．one | B．it | C．which | D．that |
—Can I pay the bill by check?
—Sorry, sir．But it is the management rules of our hotel that payment _____ be made in cash．
| A．shall | B．should | C．must | D．can |
According to the law, it is _____ get your driving license．
| A．not until you’re eighteen can you | B．until you’re eighteen that you can’t |
| C．not until you’re eighteen that you can | D．until you’re eighteen when you can’t |
Although he was in poor health, Robert succeeded_____other more famous engineers failed．
| A．which | B．that | C．what | D．where |