Exercise 1 :

1.Reuseable bags are better than plastic bags because they are made of natural materials.

2. It is one of the most popular tourist attractions in Viet Nam.

3.Robots can already do many tasks traditionally done by human.

4.Future robots will have ability to beings interact with the human.

5. Teaching robots can help children improve their pronunciation.

B2:

1. How often do you practise playting table tennis?

2.Why don't we go on a picnic for change ?

3.Did you usually play marbles when you were small ?

4.Televion attacts millions of different viewers because it offers many interesting programmes.

5.Ha Long Bay is Vietnam's most beautiful natural wonder.

B3:

1.Things at the shop near my house are cheaper than those at the suoermarket.

2.She has a younger brother and Bruce Walkers is his name.

3. She is very lovely, she has fair hair and blue eyes.

4.We first met when she came to Ha noi with her parents last summer.

5.My sister is coming to Ha Noi again on a tour next summer.

B4:

1.Does your family sometimes play game together ?

2. A room where they film different show is a studio.

3.Nearly, all households in America have a TV.

4.It is necessary for us to be present at the class discussion on Sunday.

5. In spring, we grow different kinds of flowers in our garden.