Cleaning women in big cities get               by the hour. 
#94124
A
pay
B
paying
C
paid
D
to pay
推荐题目
We don’t allow ___in the office. But you are allowed ____in the rest room. 
#89766
A
smoking, smoking
B
to smoke, to smoke
C
smoking, to smoke
D
smoke, smoking
John rushed out in a hurry, ___________ the door ____________.
#96712
A
leaving; unlocked
B
leaving; unlocking
C
left; unlocked
D
sang; singing