`1.` competed
`\text{HTĐ bị động: S + am/is/are+ VPII + (by +O).}`
`2.` scientists
`\text{→trc and là plural noun => sau and alà plural noun}`
`3.` friendship
`\text{→mạo từ + noun}`
`4.` delegation
`\text{→DT sở hữu + noun}`
`5.` cultural
`\text{→adj + noun}`
`6.` attraction
`\text{→mạo từ + noun}`
`7.` successfully
`\text{→V + adv}`
`8.` peaceful
`\text{→adj + noun}`
`9.` competition
`\text{→mạo từ + noun}`
`10.` preparation
`\text{→adj + noun}`