they, allowed, make, their, should，decisions, be, to, own
________________________________________________________.
he, sick, today, might, be
_________________________________________________________.
it, be, can't, book, Lily's
________________________________________________________.
must, sunny, tomorrow, be, it
________________________________________________________.
巨石阵的未解之谜
The stone ring at Stonehenge is a famous sight for tourists in Britain.
One thing we know 1. (exact) about Stonehenge is that it was completed 3500 years ago. Experts think that originally there were 30 stones, 2. only 17 remain standing.
One of the main 3. (fact)that we don't know about Stonehenge is why it was put there. Perhaps it might have been a place for 4. (watch) the stars and planets. And we also don't know how Stonehenge was 5. (build). Some of the stones came from 200 kilometers away and some of them w6. 40 tons. We quite wonder how the workers 7. (manage) to get these huge stones into an upright position at that time，but we think that workers must have used ropes to pull them u8. . But how did the stones get there in the9. (one) place? 10. answer may be told in the future.
They plan to go for a p________ this weekend if it is sunny.
