I am not sure ............ food tablets might supply enough energy for astronauts or not.
A. what
B. why
C. how
D. if
Giải bởi Vietjack
Ta nhận thấy ở cuối câu gián tiếp có cụm “or not” (có hay không) mang ý nghĩa nghi vấn nên câu trực tiếp phải là một câu hỏi nghi vấn Yes/ No
Cấu trúc: S+ asked + O + if / whether + S + V.
=>I am not sure if food tablets might supply enough energy for astronauts or not.
Tạm dịch: Tôi không chắc liệu viên nén thức ăn có thể cung cấp đủ năng lượng cho các phi hành gia hay không.
Đáp án cần chọn là: D
“If the weather is fine, I will go on a picnic with my friends,” she said.
The teacher asked us what the essential conditions for human life ..................
“ It’s really nice of you to help me”, Peter said to Jack.
=>Peter thanked Jack_______ .
“I don’t want to meet him again”, she said.
=>She said she _______ to meet him again
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The teacher asked, "Who speaks English?"
=>The teacher wanted to know_________.
Choose the best answer.
“I went to see him yesterday”, she said.
=>She said she ______ to him the day before.
“I have just received a postcard from my aunt,” my best friend said to me.
