An e-mail address consists _______letters and dots and the symbol‘@’.
---______ did you first skate? ---Two years ago.
We are going to have a party ______ money for the poor people.
Sorry, Jim. I don’t have ______ time ______ with you. --- That’s all right.
---______ have you been in class today? ---For two hours.
--- Thank you for your help. --- ______.