We arrived home at 9:00 in the evening, __________most people had already had supper.
| A．at that time | B．by that time | C．at which time | D．by which time |
Mike is handsome, kind and full of energy______，I can't speak too highly of him．
| A．As aresult | B．By the way | C．In a word | D．On the contrary |
Teachers' advice of______stress over the school days must be grant．ed by the headmaster．
| A．students to reduce | B．students reducing |
| C．students reduced | D．students being reduced |
The public transportation in this city is very convenient, where many buses run______．
| A．occasionally | B．approximately | C．immediately | D．frequently |
－Where have you been all day?
－I ______some former classmates and I couldn't get back until it was dark．
| A．have met | B．would meet | C．met | D．had met |
－He is eager to try something he has never tried before．
－Oh,I see．That，s ______he's different from others．
| A．when | B．what | C．how | D．where |