78. I'm going to visit after work in the evening

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

80.What is your mom 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 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.

78. I / going / visit / after work / evening.
=> I'm going to visit her after work in the evening 
79. Residents / store owners / concerned / new mall / for / few months.
=> Residents and store owners concerned about the neww mall which has been opened for few months
80. What / mum / going / do / weekend ?
=> what is mum going to o next weekend ?
81. You / ought / go / market / buy / fish / vegetables.
=> you ought to go to the market to buy fish and vegetables
82. People / do / everything / without / help / modern equipment / years ago.
=> people have been doing everything without being helped by modern equipment for years ago
83. How old / your brother / sister / then ?
=> how old is your brother and sister then?
84. Some people / neighborhood / not happy / changes.
=> some people in the neighborhood are not happy about the changes
85. It / difficult / learn / two languages / same time.

=> it's difficult to learn 2 languages at the same time