Carl is starting college in September. ______, he’s traveling around  Europe.

I want to ring him＿＿＿to know the reason why he rang＿＿＿while I was speaking yesterday. 

I’m afraid we can’t come, but thanks for the invitation_________.

One day, when I was walking in the street, someone dropped a pie from a window above, and it _______ missed landing on my head.

____ most children nowadays are the only chidren, they tend to be more self-centered．