I would have felt more comfortable if you _______ receiving my email a little more quickly.
Only when your identity has been checked ____________.
My son set out _____ questions when I set about ______lessons.
--What do you want to do next? We have half an hour until the basketball game. --____. Whatever you want to do is fine with me.
____ her friend was badly hurt, she burst into tears.
___ from space, the earth with water ___70% of its surface looks like a "blue blanket".