hinese carmakers are years behind their westerncounterparts _______ quality, technology and service.

His failure in the mid-term exam came as no surprise ________ the fact that he had not got himself well-prepared for it.

I will ask my teachers for help _______ I have any problem.

The project will help people understand the many threats to the natural environment ________ endangered plants and animals live.

Our English teacher requested that the homework _____ tomorrow morning. [ ]