We can’t put off _____ a plan .
I’ve asked him __________ us for dinner, but he said he was quite busy.
— __________ did you pay for it? — $10.
— When should I ask her? — The sooner ___________.
Terry told me that they planned to set off _________ Tuesday morning.
When I met her in Italy, she _____________ a photo of the tower of Pisa.