1. reads 2. catches 3. buys 4. writes 5. walks 6. does 7. flies 8. goes 9. has 10. studies
请写出下列动词的第三人称单数形式。 1. read ________________
1. reads 2. catches 3. buys 4. writes 5. walks 6. does 7. flies 8. goes 9. has 10. studies