Question

mọi người ơi giúp em với ạ mai em ktra rồii

Answer 1

1/B. opportunity
2/B. go out of
3/C. focuses on science and engineering
4/B. It is the oldest university in the world. 

Answer 2

V.
1/ is not - don't take
2/ do - will see
3/ had left - erupted
4/ had spent - arrived 

Answer 3