Cars make our life easier, _________ they bring environment problems.
– When shall we meet again next week?-- _______ day is possible. It’s no problem with me.
In the dark street, there wasn't a single person __________ she could turn for help.
She is _______of the two.
It is _______ outside. Let’s put on our raincoats and go out, Tom.
A spaceship flies at about eleven kilometers _______ second.