—Why didn’t you say hello to him yesterday?
—What a shame!But never before_______I_______him.
| A．/;had met | B．have;met |
| C．did;meet | D．had;met |
-- I am going to Sidney for further studies next month.
-- That's fantastic. Can you keep emailing me ______ you are there?
| A．though | B．because | C．until | D．while |
The well was found __________ when we got there.
| A．digging | B．to be dug | C．to dig | D．being dug |
Tom, ________________ you from taking a hand in that affair, you ______________ in prison.
| A．if I didn’t stop; would have stayed |
| B．had I stopped; would be staying |
| C．shouldn’t I have stopped; would stay |
| D．if I hadn’t stopped; would have stayed |
The group’s research has done much toour knowledge of the HIV virus．
| A．advance | B．pull | C．rush | D．adopt |
______ right in the center of the city, the park attracts a lot of tourists.
| A．Seating | B．Laid | C．Situated | D．Stood |