—Sorry, I forgot to water the flowers. — .You can do it after lunch if you like.
We’retalkingaboutthepianoandthepianist_____wereintheconcertweattendedyesterday.
Thefreezingpointisthetemperature__________waterchangesintoice.
Don’t talk about such things _______ you are not sure about.
Hurry! The train _______. You know it _____at 8:30am. .
With the help of high technology, more and more substances _________ in the past years.