________their opinion,I can solve the problem by myself.
—It’s dangerous to swim here. Look at the sign.—Oh, I _______ notice it. Thanks for telling me.
He never ________ no matter how many difficulties he has.
— _______ can we get there? —In five minutes.
This is the school _______ I studied three years ago.
There goes the bell. Hurry up, _______you’ll be late for class.