50.We found English very hard in the 　　　　　(begin).

49.Something has 　　　　　(happen) to his family.

48.The places of interest are 　　　　　(bore).

47.The students spend 2 hours in 　　　　　(plant) the young trees.

46.It 　　　　　(take) me 2 hours to finish my homework yesterday.

45.He makes a living by 　　　　　(make) toys.

44.The boy 　　　　　(join) us in playing football just now.

43.What an 　　　　　(amaze) result it is!

42.She was 　　　　　(amaze) at the beautiful fish under the sea.

41.The shirt is too small for me.Give me a 　　　　　(big) one.