- LEXICAL ERROR
2. Contraction
The lexical error here is the use of the word contraction. The appropriate word is construction. Hence, the right phrase is UNDER CONSTRUCTION.
- SYNTACTICAL ERROR
1. CERVICE HP
There are two errors here. The first is lexical errors, the word cervice is not listed in English dictionaries, it should be service. Also, the word acesoris. It should be accessories.
The syntactical error here is the use of the phrase cervice hp, it should be hp service.
- GRAMMATICAL ERROR

It is clear that this sentence is grammatically wrong. We should not be used with to be is. The right sentence is We are closed.
2 REACHS YOU ASPIRATION IS SKY-HIGH
The native speaker will be confused with this sentence absolutely. The right sentence perhaps Reach your dreams as high as sky.