The government has taken measures          air quality.
#95080
A
to improve
B
improved
C
being improved
D
to be improved
推荐题目
______ herself with routine office tasks, she had no time to attend to her children.
#91375
A
Occupying
B
Occupied
C
Being occupied
D
To be occupied
He found a magazine ________with the owner’s name ________on the desk with the back cover ________off. 
#95962
A
marking, lying, torn
B
marked, lying, torn
C
marked, laid, tearing
D
marking, laying, tearing
 The boy pretended       when his parents entered the room.
#96380
A
reading
B
to reading
C
to be reading
D
having read