While standing on a moving bus, you’re supposed to hold onto the bar in order not to _____.
#84430
A
in balance
B
keep balance
C
lose balance
D
hold the balance
推荐题目
The policeman was ________ abusing his power when performing his duty, but it hasn’t been ______ yet. 
#71689
A
charged with; confirmed
B
blamed for; approved
C
assessed ; proved
D
accused of; proved
 In many countries, some scientists are already _______ research in order to produce a cloned human baby.
#69051
A
putting up with
B
coming up with
C
putting forward
D
pushing ahead with
That winter we ______to write a history of our school.
#80645
A
set out     
B
set about
C
set off     
D
set up