—Look! I found a wallet in the classroom—You should give it to its        .He must be upset about losing it.

---_______do you go to the theatre, Li Lei?      ---Once a month.

The first day of school, my teacher says “I” _______ a word in English. 

The American boy is only four years old. He can swim            the lake.

---The artist has got _____ much work to do that he hardly has time to help his wife with the housework. ---That's true. Even on Sundays he is busy with his work.