1. I … a letter to my friend next week. A. write B. wrote C. will write 2. Alice and Polly… just … the costumes. A. has brought B. have brought C. brought 3. I have studied English … 5 years. A. for B. since 4. My mum … the flowers yesterday. A. waters B. water C. watered 5. E-mail … be useful. A. must B. has to C. may 6. Children and their parents … a folk concert now.