I've already bought some souvenirs.
We haven't found our passports yet.
Has Peter seen the Queen yet?
We've already spent a day on the beach.
We've already taken a coach tour.
They haven't bought a guidebook yet.
She has already visited the opera house.
1.You should not be late. 2. This book is very valuable. You must not lose. 3.I have to admit that I'm wrong. 4. I need to work hard on his English. 5. You must listen carefully to the teacher in class. 6. You must do homework every day. 7. You should not forget about their duties. <span>8. Must be very difficult to perform such exercises.</span>
1 What
2. Really
3 horrible
4. Crazy
5. It
Sam and Kate wanted to help Professor Wallace. They liked exploring the rain forest.
They were a long way from their camp. They were afraid of the rain and they saw a cave.
<span>There were lots of bats in the cave. The children weren't afraid of
bats.They saw a big footprint, too. Then they found an old building.</span>