The family is faced with lots of trouble, _____ the house problem is the worst.
This book can be used in ________ countries.
. After school, the students came home, ________.
. I forgot ________ my exercise-book with me, so I can’t lend it to you now.
Tom dropped in to see us on his way ________ home from the theater.
. Come _____. I’ll introduce my _____friend, Bob, to you.