81. It’s really kind __________ you to help poor people.
82. He arrives __________ Singapore on Monday evening.
83. There is a meeting __________ 7 am and 9 am
84. It was hot, so I turn __________ the air conditioner.
81. It’s really kind __________ you to help poor people. 82. He arrives __________ Singapore on Monday evening. 83. There is a meeting __________ 7 am
By Kaylee
81. of
82. in
83. between
84. on
1. of
2. in
3. between
4. on