Give the correct form of the words in brackets 1. An international meeting on ( economy ) =- development took place in Singapore last we

Give the correct form of the words in brackets
1. An international meeting on ( economy ) ……………. development took place in Singapore last week
2. The USA í a world leader in space ( explore ) …………………..
3. The ( invent ) …………. of the computer is one of the biggest achievements in the 20th century
4. It seems ( nature ) …………… for a child to spend so much time by himself or herself
5. Advences in ( medicine ) …………….. science will help people live longer in the future
Giúp vs TT