... Infinitive: nên Unit: 13 ACTIVITIES (B. Come and play – B1,2 ).HOMEWORK. Learn vocabulary and grammar by heart. Do exercises Unit 13 – B1,2,3 in workbook (page 83,84,85 ). Prepare Unit 13 – ... Let’s go. Would you like to play table tennis, Nam? I’d like to, but I can’t. Period 82 UNIT 13: ACTIVITIES Lesson 4: come and play (B1,2 )I. VOCABULARY- Paddle (n) :C¸i vîtTable tennis...