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1b. ... they were playing cards

c. ...they played cards

d. ...they often play cards.

e. ...they are playing cards

2. a....John has copied two cassettes.

b. John is copying two  cassettes at ...

c. ... John will  copy two  cassettes.

d. Yesterday John copied two  cassettes.

e. John was  copying  two  cassettes.

3. a. ... Kathy writes a letter.

b. ... Kathy was writing  a letter.

c. Kathy has just written  a letter.

d. ... Kathy will write  a letter.

e. ... Kathy was writing  a letter.

4. He has been reading magazines for an hour.

b. ... he was reading magazines.

c. ... he usually reads magazines.

d. Now he is reading magazines.

e. He hasn't read magazines yet.

5. a. The children haven't done their homework yet.

b. The children have just  done their homework.

c.  Every evening the children do  their homework.

d. ... the children were doing their homework.

e. Yesterday the children did their homework.

6. a. Now we are reading the book about Harry Potter.

b. We have already read the book about Harry Potter.

c. ... we read the book about Harry Potter.

d. ...we were reading the book about Harry Potter.

e. ... we will read the book about Harry Potter.

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