She devoted herself ______ to her research and it earned her agood reputation in her field

She says that she’ll have to close the shop ________business improves.

It was my fault. I ________you about the meeting earlier.

am one of the students who _________ English well in my class but he is the only one of us __________ maths well.

he clock ________ 11, I was about to leave forthe supermarket