To live a green life, we should try to save ____ energy and produce__pollution.
---I want to know ______? ---In two weeks.
Please speak in a low. The baby is sleeping.
---I’m sorry I ______ my homework at home. --- Don’t forget ________ it to school tomorrow.
Mummy, can you pick me _______ after school?
Could you tell me _______ that’s a fast train or not?