选出不同类的单词或短语. ( ) 1. A. classroom ( ) 2.

( ) 2. A. what

( ) 3. A. book

( ) 4. A. turn right

( ) 5. A. to the office

B. how

B. ruler

B. turn left

B. to the stairs

C. go

C. pencil

C. go down the stairs

C. to the classroom

D. where

D. straight

D. office

D. classroom