"Thư ký của giám đốc rất đẹp."

This sounds like vietglish. Where did the articles "the" go?

"the director's secretary is very beautiful" would be correct. This is verging on nonsense.

According to the course, "đẹp" means both "pretty" and "beautiful" so I don't understand why it has to be "beautiful"

it seems like the further along i get into this the less it makes sense grammatically.

director still missing the...

Đẹp ≠ pretty? My answer was not accepted

Yes, many errors in English, so maybe many errors in Vietnamese, but I am learning something I think!

giám đốc 監督 "director; supervisor"

• Mandarin: jiāndū
• Cantonese: gaam1 duk1
• Sixian Hakka: kam-tuk
• Minnan: kàm-tok / kam-tok

thư ký (also thư kí) 書記 "secretary"

• Mandarin: shūjì
• Cantonese: syu1 gei3
• Sixian Hakka: sû-ki
• Minnan: su-kì / sir-kì / si-kì

I don't think ''manager'' is a wrong answer :(

What kind of English is that?

The further you go the worse the grammar gets..