—Does Liu Hui serve in the army? —No, but he ________ in the army for three years.
Bad habits are no way easy to be ______; it needs your determination and perseverance.
What a pity! Considering his ability and experience, he ______ better.
They advocate the proposal we were opposed ______ rediscussed at the next meeting.
The doctor advised the patient to give up smoking _____ his own health.
In our work quality counts for ______ quantity.