We still haven’t got a sponsor although the fact that we’ve written to dozens of companies.
→ Despite + the fact that
People in the South speak more direct than people in the North do.
→ Direct ( vì speak là động từ (V) phải đi với trạng từ (Adverb) )
Many people have been claimed that the show tickets are too expensive.
→ Have claimed ( Đây là thể chủ động, không phải bị động nên không thể dùng ''been'')
It’s well worth to go to Ha Long Bay as it is very picturesque.
→ Going ( be well worth + V-ing)