--- When is ______ birthday?
--- His birthday is ______ August.
| A．Bill’s, in | B．Bill’s, on |
| C．Gina’s, on | D．Gina’s, in |
When the star fell ____ the darkness quickly at night，all the people felt it amazing．
| A．down | B．off |
| C．behind | D．through |
It's an either-or situation．You can watch TV or play games，but you can't do ____．
| A．others | B．either |
| C．another | D．both |
--I'd like to book a room for tonight．
--Sorry，sir，but we don't have any rooms ____ right now．
| A．able | B．comfortable |
| C．available | D．suitable |
The astronauts were so interested in____ beauty of nature that they took lots of pictures in____ space．
| A．the; / | B．the；the |
| C．/；the | D．/; / |
He speaks ________ fast ________ I can’t follow him．
| A．so；that | B．such；that |
| C．so；as to | D．enough；that |