Choose the option that complete the sentences a) What time __________the train this afternoon? 1. will you be 2. you are taking 3. you are going to take 4. are you taking b) A: I need someone to help me with the children. B: Don't worry, I'm free ___________ after them, starting next Monday. 1. I'll look 2. I'm going look 3. I'll be looking 4. I'm look c) I ____celebrating 20 years old next week. 1. going to be 2. am being 3. will be 4. was be d) He __________ with his classmates at the end of the school year. 1. be will traveling 2. will be traveling 3. is be traveling 4. traveling​