Someone is at the door. ________ must be Mr Smith.
--- What do you enjoy most ____ in the summer holidays? --- Playing table tennis.
--- I think we have met the word before. --- Yes. It is in the reading material ____ we ____ reading yesterday.
She might have been in time for the train, but she _______late.
Tom is the only one of the students in our school who_____late this morning.
You can find whatever you need at the shopping centre,_____is always busy at the weekend.