I think _______ a foreign language is not easy. You should _______ it often.

Have you ever ____.— No, never.

–When were the soldiers sent to the earthquake-stricken area — _______ the earthquake broke out.

lor green in ancient Egypt symbolized spring,which is the time of _______ year when things in nature start to grow after_______ long winter.

It was dangerous to throw that bottle out of thewindow. You could have hurt someone.—I’m so sorry! I _______ .