Tom wants to be a singer and he_____ singing lessons to do it.

They were _______ busy _______ with each other to remember the time.

_____ have you stayed in this city?—For about five years. [ ]

Why didn’t you answer my phone call, Jack?—I’m sorry, but I ________ then.

please pass the key _ _ the lock. —oh! Is it a set _ _ keys?[ ]