Allen had to call a taxi because the box was ____ to carry all the way home.
He insisted that he _____ from heart trouble, but I didn’t think so.
The professor referred to _____ yesterday.
He got completely _____ when he saw both Lucy and Lily, who are twin sisters.
--- Shall I open the window to let some fresh air in? --- No, _____
It ______ at the crossroads ______ he was killed in the accident the other day.