几道高中英语题

1 B while在...时（指一个延续性的动作） the moment=when suddenly突然 once 曾经，一...就... 不符。 故答案为B
2 up into set up 建立 look into 调查
3.Only practicing more can you master English.
4.He studies too attentively to go to eat and sleep. 纯手打 请采纳

1.A2.up for3.Only to practice more and more ,you can study English well.4.He forgot to eat food because he was force in studying.

B,一---就OUT INTOwe can learn english well only with more practice he is so abSorbed in study that he forget food and sleep

1.A2.up into3.Only the practice more, to learn English well.4.He was so focused learning which neither eat nor sleep.