下列字母中元音音素相同的一组是__________。

He is such a _____________ teacher that he knows what his students need.

wyers have donated $ 50, 000 to _________ ourschool’s campaign “Help the Needy”, which was started by our former headmaster10 years ago

Smoking is bad for your health. You should ______________.

（题文）Beijing’s new international airport ___________ into use in 2019 will serve 72 million passengers annually.