EX1: Present simple or Present continuous. 
1. A lot of water (flow) .....flows...into the river every year. 
2. They (visit)...are visiting..the temples and pagodas at present. 
3. Every girls and boys in the class (own)..owns.. his or her English textbook every term. 
4. I don’t like her. She (always/talk)..always talks..so much. 
5. Money and time (be) ..is... very necessary.
EX2:Choose the best answer:
1. (May/Can/Shall) you show me the way to your heart? 
2. - Congratulations! 
    - (Thanks you/ Thank so much/ Thanks a lot)! 
3. - I love you! 
    - (Oh no/ Oh yes/ Oh really?) 
4. - What do you think about me?
    - (Short hair/ Nothing interesting/ Perfect) ! 
5. - Honey! I wanna go (to play/ playing/ play)! 
EX3:Put the correct tag questions for these sentences: 
1. This won't take long __will this_?
2. She doesn't believe you__does she___?
3. It didn't matter very much___did it__?
4. He shouldn't put so much salt in it__should he___?
5. Mary couldn't leave the children alone___could she__?
6. You aren't doing anything tonight___are you__?
7. You wouldn't mind helping me with this__would you___?
8. George hadn't been there before__had he___?
9. The children weren't surprised___were they__?
10. You wouldn't like another drink___would you__?