– Lily, why are you still here? School is over for half an hour.-- Because I ______ my task yet. I still need one more hour.
____________ they are brothers, they look like each other.
We will spend our summer holiday in Guilin, but we haven’t decided______________.
— When _________ you________ your teeth, Billy? —Just now.
When I was walking in the street, I saw a plane___________ over my head.
We ___________ when the teacher came in.