What does he think of game shows —Heloves .

Hello, this is Tina speaking. Is that Sam— Sorry, he isn’t here at the moment.

She devoted herself ______ to her research and it earned her a good reputation in her field.

The girl ________ is my friend. Her name is Lily.

We are now in senior three. I think it’s time we ______ more efforts for the college-entrance exams.