______ some problems have arisen in the process, we are confident that we can handle them.

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

Jack took music than any boy in his class and held a concert successfully.

Do you go to the cinema to see 3D Titanic last night? — No, I _______ go to the cinema. The tickets are too expensive.

It always takes me not so long to shop because I like to go directly to ______ I want to buy.