13. Don’t worry! I'll _____ his safety.
―Have you worked out when the final payment is _______? ―Early next month.
The _______ are ten to one that we’ll win the match.
He had no choice but to _________ an excuse to explain his being late.
The old man said the accident ____careless driving, so a lot of money_____be paid by the driver.
The news has spread all over the country _____ the spaceship succeeded in returning to the earth.