Life is like riding a bicycle. ________ your balance, you must keep moving.
#88520
A
Keeping
B
To keep
C
Keep
D
Being kept
推荐题目
When ______ by the teachers, a student tends to study harder than usual.
#95451
A
to be praised
B
praising
C
praised
D
to praise
---What can I help you, sir?--- I’d like to have this watch_______.
#93790
A
to be repaired
B
repair
C
repairing
D
repaired
_____________ the program, they have to stay there for another two weeks.
#88690
A
Not completing
B
Not completed
C
Not having completed
D
Having not completed
The more you practise ______ English, the better your _____ English will be.
#97521
A
to speak, speaking
B
speaking, spoken
C
spoken, spoken
D
spoken, speaking