I’m really sorry, Lucy. I ______ to help you, but I was too busy at that time.
He treasured a notebook in which ______ his bank account password and his friend’s addresses.
You can only be sure of ____ you have at present; you cannot be sure of something ____ you might get in the future.
I went along the beach thinking of nothing ____.
The dangerous virus ____ in the next few weeks in the laboratory can cause fatal diseases.
All the dishes in this menu, unless ____ stated, will serve two to three people.