Exersice 6 : Simple Present and Present Progressive
The Question for Exercise 6 Are:
1. Something  ____ (smell) very good.
2. We ____ (eat) dinner at seven o’clock tonight.
3. He ____  (practice) the piano every day.
4. They ___ (drive) to school tomorrow.
5. I ___ (believe) you.
6. Maria ___ (have) a cold.
7. Jorge ___ (swim) right now.
8. John ___ (hate) smoke
9. Jill always ___ (get) up at 6:00 A.M
10. Jerry ___ (mow) the lawn now.

The Answers Are :
1. Something smells very good.
2. We are eating dinner at seven o’clock tonight.
3. He practices the piano every day.
4. They are driving to school tomorrow.
5. I believe you.
6. Maria have a cold.
7. Jorge is swimming right now.
8. John hates smoke.
9. Jill always gets up at 6:00 A.M.
10. Jerry is mowing the lawn now.

Exersice 7 : Simple Past Tense and Past Progressive
The Question for Exercise 7 Are:
1. Gene ___ (eat) dinner when his friend called.
2. While Maria was cleaning the apartment, her husband ___ (sleep).
3. At three o’clock this morning, Eleanor ___ (study).
4. When Mark arrived, the Johnsons ___ (have) dinner, but they stopped in order to talk to him.
5. John ___ (go) to France last year.
6. When the teacher ___ (enter) the room, the students were talking.
7. While Joan was writing the report, Henry ___ (look) for more information.
8. We ___ (see) this movie last night.
9. At one time, Mr. Roberts ___ (own) this building.
10. Jose ___ (write) a letter to his family when his pencil ___ (break).

The Answers Are :
1. Gene was eating dinner when his friend called.
2. While Maria was cleaning the apartment, her husband was sleeping.
3. At three o’clock this morning, Eleanor was studying.
4. When Mark arrived, the Johnsons was having dinner, but they stopped in order to talk to him.
5. John went to France last year.
6. When the teacher entered the room, the students were talking.
7. While Joan was writing the report, Henry was looking for more information.
8. We saw the movie last night.
9. At one time, Mr. Roberts owned the building.
10. Jose was writing a letter to his family when his pencil broke.

Exersice 8 : Present Perfect and Simple Past
The Question for Exercise 8 Are:
1. John ___ (write) his report last night.
2. Bob ___ (see) this movie before.
3. Jorge ___ (read) the newspaper already.
4. Mr. Johnson ___ (work) in the same place for thirty-five years, and he is not planning to retire yet.
5. We ___ (begin; negative) to study for the test yet.
6. George ___ (go) to the store at ten o’clock this morning.
7. Joan ___ (travel)  around the world.
8. Betty ___ (write) a letter last night.
9. Guillermo ___ (call) his employer last night.
10. We ___ (see; negative) this movie yet.

The Answers Are :
1. John wrote his report last night.
2. Bob has seen this movie before.
3. Jorge has already read the newspaper.
4. Mr. Johnson has worked in the same place for thirty-five years, and he is not planning to retire yet.
5. We haven’t begun to study for the test yet.
6. George has gone to the store at ten o’clock this morning.
7. Joan has traveled around the world.
8. Betty wrote a letter last night.
9. Guillermo called his employer yesterday.
10. We haven’t seen this movie yet.