—Please sit down. —_____________.
.---______you swim ? ----Yes, but I’m not good at swimming .
Billy is a nice boy . he knows a lot , but he never ________.
Look ! A boat is passing ________the bridge .
He set off _______such a hurry that he left the ticket at home .
.How long have you stayed here ? ______two days . A, For B. In C. By D. Since