Ex1: Make question for the underlined part.
1.Our friends are playing in the garden.
 =>.................................................
2.Mr.Tan is working in his room.
=>.........................................
3.Linh and Quang are studying in the classroom.
=>................................................................
4.It's ten to ten.
 =>................
5.My sister is doing her homework.
=>.............................................
6.He is reading in his room.
=>..................................
7.The train is going to Nha Trang.
=>..........................................
8.Her mother is cleaing the table.
=>..........................................
9.His sister is a nurse.
=>...........................
10.My mother works in a hospital.
=>...........................................
Ex2: Put the given words in the correct order to make a complete sentence.
1. doing / is / mother / what / your ?
=>............................................
2. Nam / Ba / are / what / doing / now / and ?
=>......................................................
3.that / Ha Noi / to / going / businessman / is / now.
=>.......................................................
4.must / you / drive / carefully / car / your
=>.....................................................
5. roads / accidents / many / are / there / our / on.
=>......................................................
6. truck / is / he / driving / his.
=>................................
7. street / can't / you / into / go / that. 
=>............................................
8. waiting / is / who / he / for ?
=>..................................
9. driving / to / Quang / is Hue.
=>.......................................
10.vegetables / the / market / to / taking / is / he / the.
=>.................................................................
Ex3: Change these sentences into progressive tense.
1.She goes to school.                        =>..............................................
2.They watch television.                     =>..............................................
3.I don't play soccer                           =>..............................................
4.You and I listen to music.                =>..............................................
5.He washes his face.                        =>..............................................
6.He doesn't do the homework.           =>..............................................
7.Do you do your homework.              =>..............................................
8.Does your father travel to work by car?   =>........................................
9.What do they do?                           =>..............................................
10.Where do you do?                        =>..............................................