49．The long walk ________(使累) the child out

48．His _________(指尖) of fingers got burnt while cooking.

47．In our eyes, the ant is _____(微小) in figure, but strong in mind.

46．Do you know how people lived in ancient _______(时期)?

45．These shoes are so _________(紧) that they hurt.

44．The boy was seen ________(系) the horse to the tree when we passed him.

43．Will __________(周四) suit you?

42．_________(脱) off his clothes, he went to bed.

41．_________(投) into prison, Tom realized he was wrong.

40．Immediately the inspiring news spread　 ________(整个)the country.