You____Tom at the party yesterday;he went abroad for a holiday last week.

---Could I have a word with you, mum? ----Oh, dear, if you ______.

—Shall I inform him of the change of the schedule right now? —I am afraid you       , in case he comes late for the meeting.

—— It's no  easy task to catch a ticket on a website that receives l billion clicks daily．一一I can’t agree with you more．There      be errors for every single step

Delta, the American airline, is sometimes jokingly explained “Don’t expect your luggage to arrive” because it ______ be very slow.