（1) 众所周知，钻石是最坚硬的物质。（2) 他不写了，因为他的笔没有

(1) As we all know, diamond is the hardest substance. <br>(2) He stopped writing because his pen was out of ink. <br>(3) We learned how to face reality, not avoid it. <br>(4) Insufficient light and wet ground make driving very difficult. <br>(5) Now that the rain has stopped, you can start. <br>(6) She urged me to accept the doctor's advice. <br>(7) In terms of his work, skills are very important. <br>(8) My children want to live in the city, but I prefer to live in the countryside. <br>(9) People should know how to distinguish good habits from bad habits. <br>(10) Without his timely help, I cannot overcome so many difficulties.

(1) Diamonds are known to be the hardest substance.<br>(2) He didn't write because his pen ran out of ink.<br>(3) We have learned how to face reality, not to avoid it.<br>(4) Lack of light, combined with the damp ground, makes driving difficult.<br>(5) Now that the rain has stopped, you can go.<br>(6) She urged me to take the doctor's advice.<br>(7) Skills are very important in terms of his work.<br>(8) My child wants to live in the city, and I prefer to live in the countryside.<br>(9) One should know how to distinguish between good and bad habits.<br>(10) I couldn't have overcome so many difficulties without his timely help.

(1) As we all know, diamonds are the hardest substance.<br>(2) He stopped writing because his pen was out of ink.<br>(3) We have learned how to face reality, not avoid it.<br>(4) Lack of light and wet ground make driving very difficult.<br>(5) Now that the rain has stopped, you can start.<br>(6) She urged me to take the doctor's advice.<br>(7) In terms of his work, skills are very important.<br>(8) My children want to live in the city, but I prefer to live in the country myself.<br>(9) One should know how to distinguish good habits from bad ones.<br>(10) Without his timely help, I couldn't have overcome so many difficulties.