63. 你正在想什么？

What are you ___________ ___________?

62. 我不同意你的意见。

I don’t ___________ ___________ you.

61. 事实上，他出生于1990年。

___________ ___________, he was born in 1990.

60. Water is in lakes, rivers, s___________ and oceans.

59. We must save every d___________ of water.

58. There is less n___________ in the countryside.

57. They visited a m___________ last month.

56. Look at the young man with light hair. He is so h___________.

55. The animals is the ___________ (interesting) of them.

54. They ___________ (work) all day yesterday.