根据汉语意思完成句子
他忍不住和同桌谈论起他所遇到的尴尬事。
He__________________ with his desk-mate about the embarrassing thing he had met with.
我感觉这个学期我忽视了自己的学习。从现在起，我必须努力了。
I __________________ my studies this term. From now on, l must work hard.
这种车现在非常受青少年的欢迎，值得买一辆。
This kind of bicycle is very popular among teenagers, so it is____________
一旦你答应为她保守秘密，你就应当信守诺言。
Once you have made your promise to keep her secret, you__________________.
昨天他没有参加我们的会议，肯定是生病了。
Yesterday he didn't come to our meeting. He                         . 
学英语时，你应该把注意力放在阅读上。
While learning English, you should                                .
毫无疑问你的努力会有回报的。
______________________________that your efforts will pay off .
你能告诉我你为什么推迟出国吗？
Can you tell me why you                                                  ?