一Why do you choose to use Beidou Navigation （导航） Satellite System，Mr.Li？
一Because I think it has many advantages GPS （全球卫星定位系统）.（ ）
A．onB．inC．overD．of
Our school life a lot since 2017． We have more activities now．（ ）
A．changesB．changed
C．will changeD．has changed
﹣ Tom， what's your dad doing？
﹣ He my bike．（ ）
A．repairsB．will repair
C．has repairedD．is repairing
Sam with his friends every weekend．（ ）
A．skatesB．is skating
C．has skatedD．was skating
Julie takes good care of the family dog． She is than her brother．（ ）
A．patientB．more patient
C．most patientD．the most patient
This cap is nice， it doesn't look good on me．（ ）
A．forB．soC．butD．or