---- Pity you missed the lecture on nuclear pollution. ---- I _________ it, but was busy preparing for a job interview.
I failed again in the exam and only then______ how much time I had wasted.
. — What happened over there? — They argued______ the waiter______ the price of the meal.
From her______ look, we could see the girls was ______ of the stranger.
______ helped to save the drowning girl is worth praising.
It is ______ that he will come to help soon because he has just gone out.