The report aims to explain how these conclusions ______.

What’s the matter with my son, doctor — ______ .

MrHarry, we want to hear what you think about the reform being carried out in our school.—OK, I _____ to that

Much to the couple’s comfort, their income is now double ______ it was five years ago.

Do you know ________ — They moved here soon after their son was born.