The rich man ______ much food______ the poor families during the hard time.
--- When did you meet your English teacher?--- While I _________ a bike along Jiaomen River.
---How did you go to Guangzhou yesterday?--- I took a taxi _________ I would be in time for the meeting.
Guangzhou subway Line 4 helps us to go to Tianhe ________ than before.
Every night I read books for _________ hour before going to ________ bed.
---Who cleaned the blackboard yesterday, Dick?---John _________.