英语翻译他没让我知道他所做出的决定（in the dark）他正忙着备考,所以不能来参加我们的聚会.（be busy d

He did not let me know that he made the decision (in the dark)
Note that he is busy,so we were not able to participate in the meeting.(Be busy doing)
Do not envy other people's success.As long as you are,you can be successful (envy)
We look forward to receiving a letter from the speaker,told us that his adventure (look forward to)
You'd better look to all the students announced the results in case they have not seen the notice (in case)

Do not envy other people's success. As long as you are, you can be successful (envy)
We look forward to receiving a letter from the speaker, told us that his adventure (look forward to)
You'd better look to all the students announced the results in case they have not seen the notice (in case)

Many foreign visitors want to visit the Great Wall a swim, they know not "the". (version), As long as you have confidence, you will be in a modern society competition successfully. (but) No matter wha...