Between the two roads ____ a TV tower called "Skyscraper Tower".
| A．stands | B．standing | C．which stands | D．stand |
______ apple fell from the tree and hit him on ______ head.
| A．An; the | B．The; the | C．An; 不填 | D．The; 不填 |
In the United States, there is always ____ flow of people to areas of ______ country where more jobs can be found.
| A．a; the | B．the ; a | C．the; the | D．a; a |
I ate _________ sandwich while I was waiting for _________ 20:08 train.
| A．the, a | B．the, the | C．a, the | D．a, a |
--- I am so sorry to have come late for the meeting.
--- It is not your fault. With __ rush-hour traffic and __ heavy rain, it is no wonder you were late.
| A．a; a | B．the; the | C．/; / | D．/; a |
We went right round to the west coast by ______ sea instead of driving across ______ continent.
| A．the; the | B．不填；the | C．the; 不填 | D．不填；不填 |