_________did you come back ? We came back last Sunday .
A. When B. Who C. How
My mother is a doctor . How your mother ?
A. is B. about C. are
Come on , . Have some apples .
A. the girlB. the girlsC. girls
is your dad ?is a policeman .
A. Who , He B. Where , She C. What , He
找出下列单词中划线部分字母发音不同的单词，并将其序号填入题前括号内：
（1）A. CanadaB. EnglandC. America D. grade
（2）A. coolB. book C. school D. food
（3）A. doctorB. orange C. carrot D. hot
（4）A. niceB. milk C. nine D. pineapple
（5）A. letterB. watermelonC. basket D. yellow
找出下列单词中不同类的词，并将其序号填入题前括号内：
（1）A. whatB. whereC. thatD. who
（2）A. policeman B. science C. uncle D. engineer
（3）A. show B. bat C. peelD. cut
（4）A. Ottawa B. Beijing C. EnglandD. Washington
（5）A. tomatoB. apple C. lemon D. kiwifruit