Jawaban:

2. He (Subject) is (to be) doing ( verb -ing) a science project (object) right now (adverb of time)

3.she (subject) is not (to be) writing (verb -ing) a letter (object)

4.Alin (subject) is not (to be) going (verb -ing) to melbourne (adverb of place)

5.is (to be) Alin (subject) going (verb -ing) to japan? (adverb of place)

6.is (to be) the cat (subject) playing (verb -ing) with (to be) the dog? (subject)

7. I (to be) am (to be) still working (verb -ing) on my computer (object) now (adverb of time)

8. I (subject) am (to be) having (verb -ing) dinner with my friend on saturday night (adverb of time)

9. I (subject) am not (to be) always losing (verb -ing) my bag (object)

10.we (subject) are (to be) building (verb -ing) our dream house (object) next year (adverb of time)