WE HEARD THE BIRDS … (SANG / SINGING / TO SING) A BEAUTIFUL SONG.

4- - ĐỀ THI CHUYÊN ANH LAM SƠN 2004 2005 POT
Lớp 10 Tiếng Anh ĐỀ THI CHUYÊN ANH LAM SƠN 2004 2005 POT

4- We heard the birds … (sang / singing / to sing) a beautiful song.