In ____ accident _____ knowledge of first aid can make _____ real difference.
How I wish I ____ the mistake! Everybody present was angry with me.
I could have called you for help, but I ____ your number.
He wasted a lot of time playing football, otherwise he ________the exam.
-Why are you make much noise? -I just can’t help _____.
"You know so much about literature. It's a pity you failed your degree," Harry said, "You ______ a good teacher."