. It never occurred to humans until the mid-l990s _______some animals can be cloned.
Susan wanted to be independent of her parents. She tried __________ alone, but she didn't like it and moved back home.
Lydia doesn't feel like __________ abroad. Her parents are old.
After many years of hard work,his dream was finally __________.
They were all against the suggestion that the meeting __________ till next week.
John received an invitation to dinner, and with his work __________ , he gladly accepted it.