1.school

→ in school : ở trường

2.has

→ has : có

3.because

→ because : bởi vì cái gì đó

4.doctor 

→ doctor(n) : bác sĩ

5.dentist

→ dentist(n) : bác sĩ nha khoa 

→ Vì ở sau có toothace nên chọn dentist .

6.happy 

→ happy(adj) : vui mừng 

Word: happy, doctor, dentist, school, because, has.

Rewrite:

It is very cold today. Some pupils are not in (1)school. Among them are Mai, Trung, Phong and Quan. Mai can't come to class because she (2)has a bad headache. Trung is at home (3)because he has a stomach ache. Phong went to the (4)doctor because he has a fever. Quan went to the (5)dentist because he has a bad toothache. Nam isn't (6)happy because he misses his friends!

#Answered by linhnguyenhalinh