Choose the correct option :
1. The exhibition was so nice yesterday . i can/ could have stayed there all day.
2. You have been painting all day. You must/ can't be very tired.
3. I didn't hear the telephone. I couldn't / must have been asleep.
4. i'm surprised Jeff didn't come to the party. He might not/ could not have known about it.
5. Emily hasn't called me for days. She can/ might be upset with me.
6. That novel might/ must be fantastic. Thousands of people have read it.
1. The exhibition was so nice yesterday . i can/ could have stayed there all day.
2. You have been painting all day. You must/ can't be very tired.
3. I didn't hear the telephone. I couldn't / must have been asleep.
4. i'm surprised Jeff didn't come to the party. He might not/ could not have known about it.
5. Emily hasn't called me for days. She can/ might be upset with me.
6. That novel might/ must be fantastic. Thousands of people have read it.
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