There are some trees in front of the classroom. （对划线部分提问）

Dave has a family photo. （改为一般疑问句）

Where is my cassette? （改为复数形式）

small, a, collection, Sue Hall, has, sports （连词成句）

He only watches them on TV. （对划线部分提问）

Does your mother have a ring? （作否定回答）

They have video cassettes. （改为否定句）

Mike has a tennis racket. （改为一般疑问句）

(用适当形式填空) Welcome ______ （they） to the club.

(用适当形式填空) Where ______ （be） my parents? At home.