Use your head, you’ll have an idea.
I want to explain _______ that prevented me doing it on time.
. I_______such a foolish mistake if I had been a little more careful.
_______the tourist discovered his mobile phone stolen, he dialed the police number.
. —You ought to have learnt all these sentences by heart. — , but I forgot everything when I was asked to recite them in front of so many students.
To regain their_______ after an exhausting game, the players lay in the grass.