The USA is a large country in ________ many different dialects are spoken.
A person ______ e-mail account is full won’t be able to send or receive any e-mails.
.It is obvious to the students ______ they should get well prepared for their future.
.I’m sorry you’ve been waiting so long, but it’ll still be some time ____ Brian gets back.
The house I grew up ________ has been taken down and replaced by an office building.
.I invited Mary and Jane to dinner, but of them came.