ool isn’t the one I really wanted to go to, but I suppose I’ll just have to______it,

The split between humans and living apes isthought by some scholars ____ 15 to 20 million years ago.

Please tell Tom not to leave the classroom unless he ______ that all the lights ______

．I willdo what I can_________ the people in trouble .

Most children need encouragement in time of failure _____ they can cheer up again.