—What do you think of the book?—Oh, excellent. It’ s worth ______ a second time.
50. A doctor was___________when Mother fell ill.
49. You must go there at once because the situation prompt action.
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.