__________ good exercise.
#96156
A
Climbing hills is
B
Climbing the hill is
C
The climbing hills are
D
The climbing of hills are
推荐题目
______ by jeep, we visited a number of cities in South China.
#91867
A
Traveling
B
Traveled
C
To be traveling
D
Having traveled
With all the novels        ,he left the library.
#96376
A
orrowed
B
orrowing
C
o borrow
D
orrow
Nobody but doctors or nurses and those ________ by Dr Li ________ to enter the patient’s room.
#88751
A
being invited;allowed
B
are invited;are allowed
C
invited;is allowed
D
invited;are allowed
She was staring out over the lake,_____ in thought. 
#98749
A
lost
B
losing
C
to lose
D
to having lost