Mọi người giúp e môn này với ạ

XII

1.  you aren't allowed to smoke in the museum

2. all new workers are compulsory to have a medical examination

3. we are possible to have a day off next week

4. hoa is shorter than lan 

5. i've never tasted such a delicious cake before

6. mr john is the best teacher in this school

XIII

1. this question can be answered by most of the students 

2. the room will be cleaned later 

3. this parcel mustn't be opened until christmas day 

4. tea can't be made with cold water