I bought the train tickets at the station easily during the spring rush, though ________ of them ________ it.
_______ matters most in learning English is enough practice.
--What did you get ______ your mother ______ Mother’s Day? -- A beautiful card ______ “Thank you, Mum”.
--Who______ it be that is knocking at the door? --It ______ be Father, but I’m not sure.
Judging from his______ expression, this problem must be quite ______.
Listen! Do you hear someone _____ for help?