It’s reported that a 40-year-old driver hit a primary school student while talking on the mobile phone this morning.-That’s a serious problem. These years, many traffic accidents _____ the “heads-down driving.”

I’m really sorry. I can’t go to the cinema with you. I am tired.

________， the fire wasn’t discovered after it had started[ ]

_____ has been introduced to the students to help themmake progress

Considering his poor health, the doctor insisted on his ________ a good rest before going back to work.