Complete the sentences using the most suitable form of be. Sometimes you must use the simple (am / is / are) and sometimes the continuous is more suitable (am / is / are being)
1. I can't understand why he _________ so selfish. He __________ (not) usually like that.
2. Petya _________ very nice to me at the moment. I wonder why.
3. You'll like Elizabeth when you meet her. She _______ very nice.
4. Normally you are very sensible, so why _______ so silly about this matter?
5. Why isn't Sveta at work today? ___________ ill?
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