Hi teachers:<br/><br/>Which sentences are correct?<br/><ul><br/><li>'I need to <u>apply for</u> Malaysia visa.' ' I need to <u>apply</u> Malaysia visa.'</li><br/><li>'I need to <u>subscribe to</u> the sports channel.' 'I need to <u>subscribe</u> the sports channel.' </li><br/><li>'What is your expertise on/in/for/regarding this issue?' Which one is ok?</li></ul>Thanks