His failure in the exam was expected. ________, it was still very disappointing.
Whatever is left over may be put into the refrigerator,__________ it will keep for two or three weeks.
Mary was much kinder to Jack than she was to the others,__________,of course, made all the others upset.
The children,__________ had played the whole day long, were worn out.
He wrote a letter __________ he explained what had happened in the accident.
She brought in her three friends, none of __________ I had ever met before.