He must_(try)his best to study hard at English

He must_(try)his best to study hard at English try his He must try to help his sister with her math?为什么try不加s my deer ,please give me a chance,i will try it bes我不懂英语 He always ___________ ( try) his best to do everything well when he was at school 他决定尽力去救她 英文 He ( ) ( ) ( ) to try his ( ) to save her他决定尽力去救她 英文 He ( ) ( ) ( ) to try his ( ) to save her He will try his best helps the girls修改病句 说出原因并翻译一下 Tom thought that no matter how ________seemed ,he would try his best .为什么填difficult something He know nothing about it but decided that he should try to get it for his master是什么意思 He is confident that he will try his best to do extra work句子有语病吗 try his hand try his hand准确的中文翻译是什么? 用try his best造句 用try his best造句? 用“try his best”造句 微生物里面的Try-his+ He asked to be given a chance to try his luck ,which at once encourage the other his first plan were ________(success的不同形式）so he had to try a third time. try one's best同义词He tried his best to help us.He ( ) ( )he could to help us可以讲下原因么，