—Who______ it be that is knocking at the door?—It ______ be Father, but I’m not sure.A. can; must B. can; may . must; can D. may; must
When you arrive home, give me a call to let me know you _____safely.
Mrs.White showed her students some pictures _____ in Paris.
All his friends’ encouragement _____ his confidence in winning the game.
Mary made coffee ____ her guests were finishing their meal. A. so that B although C. while D. as if
The wise use that is ____ the limited time has greatly contributed to his success.