Đề bài là : circle the simple sentences

77. B. We also bring fruit, water, and a lunch box with us.
- Chủ ngữ: We 
- Vị ngữ: also bring fruit, water, and a lunch box with us. 
78. C. That's my dad and I boating at Yen So Park.
- Chủ ngữ: That
- Vị ngữ: 's my dad and I boating at Yen So Park.
79. A. My family often goes cycling in the countryside.
- Chủ ngữ: My family 
- Vị ngữ: often goes cycling in the countryside.
80. A. You might get sunburn.
- Chủ ngữ: You 
- Vị ngữ: might get sunburn
81. C. There's a lot of fresh air.
- Chủ ngữ: There
- Vị ngữ: 's a lot of fresh air.
82. B. It's really hot and sunny at noon.
- Chủ ngữ: It
- Vị ngữ: 's really hot and sunny at noon.
83. A . I'd would to join you next time.
- Chủ ngữ: I
- Vị ngữ: 'd would to join you next time.
84. B. They are good for our health.
- Chủ ngữ: They
- Vị ngữ: are good for our health.
85. C. I don't want to get sunburnt.
- Chủ ngữ: I
- Vị ngữ: don't want to get sunburnt.
86. A. Mi's family often goes cycling in the countryside.
- Chủ ngữ: Mi's family 
- Vị ngữ: often goes cycling in the countryside.
87. C. I walk to school.
- Chủ ngữ: I
- Vị ngữ: walk to school.
88. A. I rarely rat breakfast.
- Chủ ngữ: I
- Vị ngữ: rarely rat breakfast
89. B. I usually eat fast food.
- Chủ ngữ: I
- Vị ngữ: usually eat fast food.
90. C. My brother and I go swimming every day.
- Chủ ngữ: My brother and I 
- Vị ngữ: go swimming every day.
91. A. It gives us energy for the day.
- Chủ ngữ: It 
- Vị ngữ: gives us energy for the day.
92. B. I also see a lot of people exercising there.
- Chủ ngữ: I
- Vị ngữ: also see a lot of people exercising there.
93. A. The weather may affect our skin condition.
- Chủ ngữ: The weather
- Vị ngữ: may affect our skin condition.
94. B. We spend a long time in the Sun without a hat or sun cream.
- Chủ ngữ: We
- Vị ngữ: spend a long time in the Sun without a hat or sun cream. 

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Câu đơn là câu chỉ có duy nhất một mệnh đề – hay còn gọi là mệnh đề độc lập.
Câu đơn có thể có nhiều hơn một chủ từ hoặc nhiều hơn một động từ, nhưng chỉ diễn đạt một ý chính duy nhất.