Gary: I can’t find my pen. Nina: Is the one on Jack’s desk ? Gary: Yes, Thank you.
____________ our football team failed in the match, we did our best.
____________ 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.