— They haven''t finished the work up to now . — Well , he ____ .
— Thank you for your CD - ROM. I'll return it as soon as I can. — ________. I've got another one to spare.
Apples are usually sold by ________ weight and eggs are sometimes sold by ________ dozen.
Although punctual himself, the professor was quite used ________ late for his lecture.
.When people move to another country, they often try ________ the customs of their native land.
The experiment is of particular importance.—I see. We will carry on with it ________ we can get enough money.