6. It has been raining for days on _____ end, as if it would never come to ____ end.
|
A. /; an
|
B. an; /
|
C. an;an
|
D. /; the
|
22. At present, it is the public bicycle service system________ Taiyuan city has launched since October 1 _________ makes a great contribution to green travel.
|
A. that, that
|
B. which, which
|
C. that, when
|
D. which, when
|
