Students _____ be allowed to use mobile phones at school．
--------I agree．Phones can bring troubles.
| A．shouldn’t | B．wouldn’t |
| C．might | D．need |
--- When did you meet your English teacher?
--- While I _________ a bike along Jiaomen River.
| A．rode | B．was riding | C．ride | D．will ride |
---How did you go to Guangzhou yesterday?
--- I took a taxi _________ I would be in time for the meeting.
| A．if | B．because | C．as soon as | D．so that |
Guangzhou subway Line 4 helps us to go to Tianhe ________ than before.
| A．most easily | B．easily | C．more easily | D．Easier |
Every night I read books for _________ hour before going to ________ bed.
| A．a , a | B．an, / | C．an, the | D．a, / |
---Who cleaned the blackboard yesterday, Dick?
---John _________.
| A．cleaned | B．does | C．did | D．is |