On April 12, 1961,_____27—year—old Yuri Gagarin(尤里.加加林)became the first human to go into_____ space.
—Roy,I have to tell you.—Oh?What’s that?
---Peter is the fastest runner of us in our class.---________. I think Sam is.
Why not the swimming club?
Green Hotel has service in town.
Peter, do you visit your grandparents?---Twice a month.