______ is a good form of exercise for both the old and the young.
#88215
A
Walk
B
To walk
C
Walking
D
The walk
推荐题目
With the meal ________, the mother sat down for a good rest．
#95689
A
cooked
B
cooking
C
to cook
D
to be cooked
Not only should you get used ______ under difficult conditions but you also you pay more attention ______ your work well.
#98934
A
to work, to do
B
to working, to doing
C
to work, to doing
D
to working, to do
(2013·南京二模)The flood last month in the east was a real disaster，________19 people dead and 78 missing.
#88431
A
to leave
B
left
C
leaving
D
having left
She won’t come over for a visit unless________.
#97350
A
being invited
B
invited
C
inviting
D
was invited
The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.
#91571
A
expose
B
exposing
C
exposed
D
being exposed