下列句子中各有一处错误，请选出来并在横线上改正。
【小题1】There arefourballoon. （______）_____________
A  B    C
【小题2】How many studentare there in your class?   （______）_____________
A    B C
【小题3】What do you do onan English class? （______）_____________
A   B  C
【小题4】Are you likemusic?    （______） _____________
A B   C
【小题5】There is two sofasin the living room.   （______）_____________
A B  C

翻译划线部分
1. Washington, D.C._______ is the capital city of the U.S.______.
2. The president_______ of the U.S. lives in the White House______.
3. The flag of the U.S. has stars and stripes_______.

Birds can use ______ to fly. ( )

A．wing

B．wings

C．winging

boy （复数）_________

写出下列单词的复数形式
1. peach ___________ 2. fruit __________
3. pear ____________   4. apple _________
5. orange ___________ 6. tree __________