—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
Don’t be so discouraged.If you such feeling,you will do better next time.
—What are you busy with?—The conference in our city next week.
—Someone might see us.— ?we are not doing anything illegal.
— It is important for you to find appropriate course at college. —I can't agree more.It's decision that affects the whole family.
A good advertisement, _____ people attach positive meanings, can contribute to the sales of a product.