--- Now the government is trying to solve the problem the school bus safety. --- So we believe     there will be fewer accidents in future.

 I enjoy my new life here. But I still miss my old friends from time to time. Here the underlined part means 　　　.

The boy doesn't speak       his sister, but his written work is very good.

—Can you come and give us a talk on Thursday or Friday?—I am afraid ______ day is possible. I am very busy these days.

—Tommy, _________ do you play the piano?—When my mom is at home, I have to every day, but she’s away this week!