Lucy spent three years _______ Chinese before she came to China.

We should never ____till tomorrow what we can do today.

As students, we should work hard and do ________ best to realize our dreams.

If you want to know the meaning of the word______, you’d better look it up in the dictionary.

May I borrow your pen, Mike ? —-Yes, of course. Here are some and you can take ______ of them.