`\text{1. We couldn't eat the food because it was very hot.}`
`\text{2. She can't help me because she is extremely busy.}`
`\text{3. We couldn't climb over the wall because it was very high.}`
`\text{4. I can't explain the situation because it is complicated.}`
`\text{5. He can't get high marks because he studies badly.}`
`\text{7. I couldn't carry the equipment because it has such a lot.}`
`\text{Mình xin hay nhất cho nhóm!}`
