When if he hadany idea what the novel was about, Jack kept silent. He have read it very carefully.
My father ______ my brother to drive, but my brother wanted to pick ______ the knowledge of the computer during his spare time.
Before he went abroad, he spent as much time as he ______ English.
Even if you are an experienced teacher, you sometimes ______ make some mistakes.
We should know that we can only reach the top if we are ready to ______ and learn from failure.
Young as he is, David has gained ______ rich experience in ______ society.