按要求完成下列各句。

1. I study by working with friends.（对画线部分提问）

    _____ _____ you _____ ?

2. Jack used to wear glasses．（改为否定句）

    Jack _____ _____ to wear glasses.

3. The teacher should allow members to use their dictionaries.（改为被动语态）

    Members _____ _____ _____ _____ _____ their dictionaries.

4. I will take a small present.(用if I were you作假设条件）

    If I were you, I _____ _____ a small present.

5. It must be Li Ming's.（改为同义句）

    It must _____ _____ _____ Li Ming.