They        have arrived at lunchtime, but their flight was delayed.

I was really anxious about you. You ______ home without a word.

---“Why do you have to be there at six?”---“The teacher demands that everyone _____in his seat at six.”

—What does the sign over there read？—“No person___smoke or carry a lighted cigarette,cigar or pipe in this area.”

Wen Jiabao told the orphans in Wenchuan  Earthquake not to cry.His words ____not  have calmed them instantly,but his concern  about common people was obviously seen.