The retired professor, _____ in his new book in the past three years, hasn’t realized the decline in his health.
#12131
A
involved
B
being involved
C
having involved
D
to be involved
推荐题目
John has determined to _______ teaching in the quake-hit area when he graduates from university.
#13038
A
pick up
B
set up
C
take up
D
give up
While income worry is _______ rather common problem of the aged, loneliness is another problem that _______ aged parents may face.
#11897
A
a; the
B
the; /
C
a; /
D
the; the
(2013·无锡市高三二模)All her hard work ________ in the end, and she finally passed the exam.
#11421
A
paid back
B
paid off
C
brought out
D
brought off
(2013·湖北武汉武昌区高三联考)One way to ________ species under threat of extinction—whatever the cause—is to remove them to zoos or parks and feed them there.
#11775
A
betray
B
resist
C
preserve
D
abandon
Rather than ________ on a crowded bus，he always prefers ________ a bicycle.
#13175
A
ride；ride
B
riding；ride
C
ride；to ride
D
to ride；riding