________ anything like this style of architecture before, we thought we were looking at giant sculptures, not buildings.
| A．We had never seen | B．Never having seen |
| C．Never being seen | D．Never had we seen |
Mike is handsome，kind and full of energy。_________，I can`t speak too highly of him.
| A．As a result | B．By the way |
| C．In a word | D．On the contrary |
Teachers` advice of _________stress over the school days must be granted 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 |