用所给词的正确形式填空。
（1）Let’s          (put) the letter in the envelope.
（2）I saw him          (fly) kite in the park.
（3）Danny is          (write) a letter for his friends.
（4）She          (want) to go shopping.
（5）They          (have) fun yesterday.
（6）You can_______ (take) a picture with my camera.