1. Add s / es / ies to the following verbs ( Thêm ‘s’ – ‘es" hoặc ‘ies" vào sau động từ thích hợp )1. do ____________ 8. worry ____________2. study ____________ 9. play ____________3. teach ____________ 10. grow ____________4. say ____________ 11. watch ____________5. cry ____________ 12. miss ____________6. dance ____________ 13. hurry ____________7. fix ____________ 14. stop ____________