When you get on a bus, the conductor will usually warn you ___ a thief.
–What about your interview _____ the famous writer?--Quite good. We’ve been friends and we keep in touch _____ each other by email.
–Why didn’t you say something, Jack? –Oh, sorry. I _____ messages on my phone.
He has been away from his hometown ________.
My little brother often felt ____ and fell _____ in class when he was in Grade 7.
--When did your father ______ your mother? -- About 15 years ago.