—Hi,Joan.Any idea where Tom is?—He ________ on the playground.I saw him there playing football just now.
48. Please _____ tomorrow, my number is 8855463.
47. ____ in thought, he didn’t notice me when I came into his room.
46. The house _____ in 1808 still remained there.
45. The soup is too hot. Be careful not to your mouth.
44. We must _____ good relations with our classmates because co-operation is essential to us, modern people.