--- Would you like to go hiking with us for summer vacation?--- Yes, I’d love to. _____ my parents have decided to take me to visit my grandmother.

He was riding to school         it began to rain.

Helen didn’t know anything about it            her father told her.

Mr. Brown is 70 this year. Although he is very old, ____ he works very hard. 

The boy didn’t go to school ____________his illness(疾病)。