$1.$ I asked the man why he hadn't taken a photo of the aliens.
$2.$ Duong asked Tim if he had seen a UFO.
$3.$ My counsin told he wanted to become an astronaut when he grew up.
$4.$ “ Will scientists find solutions to reduce air pollution in the future?” she said to me.
$5.$ The polluted water makes the fish died.
Học tốt!