79. Residents and store owners have been concerned about the new mall for few months.

80. What is mum going to do at weekend?

81. You ought to go to the market to buy fish and vegetables.

82. People did everything without the help of modern equipment many years ago.

83. How old were your brother and sister then?

84. Some people in the neighborhood are not happy with the changes.

85. It is difficult to learn two languages at the same time.

@Holliwood#:

Bn tham khảo nhé!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Xin ctlhn ạ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!