Question

20. My hands are dirty because I (fix) the car all day.
21. Our neighbours constantly (quarrel) with each other. Why
should they?
22. Susan deserves a break now. She (type) since 8 o'clock.
23. He (work) harder since he failed the exam. I believe he will
pass it this time.
24. How much your luggage (weigh)?
25. Look at those snow drifts! - Oh, yes! It (snow) since
morning
26. I never (know) my mobile number by heart.
27. (You / to see the news today? It is striking!
28. (You/work) on any special project right now? I (get) an offer
for you.
29. Listen! Tell them they (sing) too loudly. I (not/hear) what
you (try) to tell me.

Answer 1

20. I was fixing, 21 quarrel, 22 has been typing 23 has been working 24 weighs 25 it has been snowing 26 knew 27 have you seen 28 are you working ... I have got 29 are singing ...i don’t hear ...you are trying to tell me