I didn’t quite follow him because he explained the theory _____that is too abstract for me.
Mary, I________ John of his promise to help you.
Parents________ much importance to education. They will do their best to give their children that priceless gift.
He has come to_____.
I strongly suggest that the information ______in my report _____to Mr. Brown without delay.
Last summer holiday, I went back to my hometown, ________ the neighbours and the house ________ I used to be familiar with were gone.