you eat the correct foods       be able to keep fit and stay healthy .

－How was your final exam, Tom?
－I’m sorry, dad. I failed and only then       the importance of studies.

I failed in the job interview and only then _____ the importance of learning English well.

–It is said that Bob will drop out of school because his family cannot afford the school fee.
– _____, let’s give him a hand.

Only when your identity has been checked ________.

At no time, as we know, _______ forget that solving Taiwan Issue is entirely internal Chinese affair.

There seemed no end to their troubles; nowhere _________ upon a path.

Only then _____________ the importance of my teacher’s talk with me.

At no time________the first to use the nuclear weapon.

For a moment nothing happened. Then 　　　　 all shouting together.