30.—Peter looked tired and a little absent-minded at the meeting. —He _____ up too late.
It’s not doing the things we like, but liking the things we have to do makes life happy.
Until now, we have raised 50,000 pounds for the poor children, _______ is quite unexpected.
My parents always _______ great importance to my getting a good education.
You can use a large plastic bottle, _____ cut off, as a pot to grow young plants in.
Although at present human egg cells and embryos needed for cloning research are difficult _____, Newspapers _________ evil leaders hoping to clone themselves.