Whenever you are to walk on the ice,__________ that it is solid and safe enough.

Linda, could we meet at 2 p.m. at the school gate— Sorry, I will be busy at that time. Let’s make it time.

_________ everyone can hear the speaker, there is no _________ in turning up the radio

Mary used to_____interested in music, but now she’s used to ____tennis.

Peter, ________ do you visit yourgrandparents— Twice a month.