Who do you think is the man __________ first flew into space in China? — Yang Liwei is.

What do you think of zoology? —- In my opinion, zoology is ______ botany.

I’ve got a ticket for the basketball game tonight.—Cool! How ________ you ________ it?

Both teams were in hard training, _______ was willing to lose the game.

Though they are twins, they are not always__________ each other.[ ]