Jane looks really tired and sleepy.— I’m not surprised at all. She often too late and hasn’t enough sleep.

That __________ a good idea.

The dolphins ____________interesting in the zoo.

Wow! These inventions are amazing．—They were all invented _______years ago.

Nanyang has changed a lot in the past five years. —Yes. You can see lots of new buildings ,flowers and trees on ___side of the street.