He was very busy that day,but he seemed_________ when we dropped by.
I have no idea ____________ measures the government will take to stop the river from being further polluted.
Scientists are convinced __________ the positive effect of laughter _________ physical and mental health.
The little girl __________ the money for herself, but she __________ it away.
He was caught in the rain, __________ himself catch a cold.
It _______ we had stayed together for a couple of weeks _______ I found we had a lot in common.