The TV show Letters Alive brings back people's of writing to each other．（　　）

A．ideasB．hobbiesC．stylesD．memories

What time is it？

Just a minute， I will _______ it for you．（　　）

A．examineB．checkC．watchD．set

Could you please fix my phone？

Sorry． The shop next may be _______．（　　）

A．usefulB．helpfulC．carefulD．hopeful

If you want to be on the school football team， you _______ train harder．（　　）

A．canB．willC．mayD．must

New media， like WeChat， _______ the way of communications nowadays．（　　）

A．are changingB．will change

C．changedD．were changing