1. I'm looking forward to your reply.
look forward to N/ V_ing/ N_phr : mong chờ, mong ngóng, mong đợi
2. She turned the vase over to look for the price.
look for: tìm kiếm, tìm
3. Clean air provides us with a healthy supply of oxygen.
provide s.o with s.th : cung cấp cho ai cáy gì