IV:

1. a => an

2. brush => brushes

3. Are => Is

4. Black long => Long black

V:

1. is riding

2. won't work

3. climb... is

4. likes... is speaking

VI: 

(1) has

(2) are

(3) convenient

(4) ideal

1. York is located in the north of England.

2. No, it doesn't

3. The streets in the central of York are very small and attractive

4. The climate is fantastic in the summer month.

VII:

1. I study English on Tuesday and Thursday.

2. They are playing games on the playground.

3. Ha Long Bay is number one of the natural wonder in Vietnam.

4. Can you tell me the way to the bus stop?

VIII:

1. Are there thirty five students in your class.

2. His favourite room is the living room.

3. Ha Noi is hotter than Sa Pa.

4. Students should finish all their homework before going to school