— I must apologize for ________ ahead of time.— That's all right.
_____ they are fit, I see no reason why they shouldn't go on playing basketball for another four or five years.
It was not until dark ______ he found ______ he thought was the correct way to solve the problem.
What a great weight she felt ________ off her mind the moment she heard she had passed the College Entrance Examination!
– What a terrible collision accident! – Judging from the scene, personally, it is one or two car drivers, rather than the truck driver, who _____.
Trapped by the police, the terrorists made their ______ attempt to explode the bomb that they carried.