61. It is believed that Ha Long Bay is a picturesque feature of Viet Nam

62. He suggests that we should go to Hue to visit the Citadel

63. It's worth reducing the smoke and exhaust fume to prevent global warming

64. The main road to the city centre has been recently widened

65. The boys prefer outdoor activities to indoor ones

66. I wish all people were aware of the importance of preserving our culture

67. My aunt asked me if my school had access to clean piped water

68. We used to read and write letters for the villagers in the past

69. I spent 2 hours finishing this report

70. In spite of my sister's tiredness, she tried to help me with the housework

61. It is believed that Ha Long Bay is a picturesque feature of Viet Nam.

62. He suggests that we should go to Hue to visit the Citadel.

63. It's worth reducing the smoke and exhausting fume to prevent global warming.

64. The main road to the city centre has been recently widened.

65. The boys prefer outdoor activities to indoor ones.

66. I wish all people were aware of the importance of preserving our culture.

67. My aunt asked me if my school had access to clean piped water.

68. We used to read and write letters for the villagers in the past.

69. I spent 2 hours finishing this report.

70. In spite of my sister's tiredness, she tried to help me with the housework.