While shopping, people sometimes can’t help ________ buying something they don’t really need.
I followed the man in a blue jacket thirty meters ______ me and watched him enter the hall.
My mom, who didn’t allow me to smoke, ______ when she caught me smoking.
—Jack is not in the office at the moment —Oh, he ______ those who are going to take the driving test in an hour.
From what she has done we can predict that she is ______enough to make up her own decision and behave in a proper way.
Never______ such a difficult problem. It took me almost half an hour to work it out.