Cheer up, boys! We’ll be successful one day        we give up our dreams.

I’m waiting for my friend.       , I’ll go swimming alone.

—Could we go and watch the football game?
—No,         you have the tickets.

Something        if they have the party tomorrow.

If there        no buying and selling of animals, there         no killing in nature.

—Lucy, what about going camping if it        tomorrow?
—Sounds great!

If we        take environmental problems seriously, the earth         worse and worse.

I don’t know if it        tomorrow. If it       tomorrow, I won’t go to play basketball.

—Shall we go for a picnic in the forest park tomorrow?
—Yes,         it rains heavily.

Nothing in the world is difficult        you put your heart into it.