The words are too difficult. I must ______.
You've finished running 8,000 meters. You ______ be very thirsty.
—What do you think of the boy? —He ______ a great kid ever since he was born, always quiet and friendly.
The sun woke me up early, ______ I had stayed out very late the night before.
Why should people go out and pay money to see bad films for ______ ?
—______ paper says a park will open with ______ playground speciallv for the old. —It sounds great.