When ______ how old he was, he kept silent.
Take your umbrella with you and it can _____ in the rain.
-Why is Tom so worried? -Because he doesn't know _his shop.
By the time he was 12 years old, he_______ threedifferent languages.
Tom studied very hard, and he wanted _______ to his chance to Learn.
-What is the policewoman doing? -She raises her arm as a(n) _______ for us to stop.