同义句转换。
1. He didn't take part in the sports meeting because he was ill.
He didn't take part in the sports meeting ______ ______ his illness.
2. She said she was an artist, but actually she was a liar.
She said she was an artist, but ______ ______ ______, she was a liar.
3. He commanded that we (should) set out at once.
He commanded us ______ ______ ______ at once.
