*WRITE THESE SENTENCES AGAIN:
1. I'm sure he hasn't retired yet. He still leaves the house every morning
=> He must has retired.
2. I'm sure he does a lot of gardening. He is certainly an expert
=> He must has done a lot of gardening.
3. I'm sure he is working in his garden now. I can hear someone is digging.
=> He must has been working in his garden now.
4. Look at those lights and cameras. Ah! Now I understand. They are making a film
=> They must has been making a film.
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@Binz
#NOCOPY