Would it be ______ for you to pick me up at one o’clock and send me to the school?
Unless ________ to answer questions, the pupils won't talk in Mrs Smith's class.
—Where did you pick up the stamp? —It was at the post office ________ we worked in the summer vacation.
Who ________ that played a trick on the new English teacher?
Where do you think ________ we can buy that bestseller?
There is no doubt that eating organic food will make you healthier, ________?