I’m sorry, but I didn’t mean to keep you waiting here for a long time, can you me?
A person ________ email account is full won't be able to send or receive any emails.
She'll never forget her stay there ________ she found her son who had gone missing two years before.
Gun control is a subject ________ Americans have argued for a long time.
Whenever I met her,________ was fairly often,she greeted me with a sweet smile.
She brought with her three friends,none of ________ I had ever met before.