Because of the Russian gas limit to Europe, attempts to use botanical fuel as a source of power.
The country has already sent up three unmanned spacecraft, the most recent ____ at the end of last March.
They ___ two free tickets to Canada, otherwise they’d never have been able to afford to go.
It is not socially ____ for parents to leave children unattended at that age.
– Where did you get to know her?-- It was on the farm ___ we worked.
____ I really don’t like art, I find his work impressive.