AIDS is said _______ the biggest health challenge to both men and women in that area over the past few years.
It is________of you to turn down the radio while your sister is still in bed.
_____into English, the sentence was found to have an entirely different word order.
Sarahpretendedtobecheerful,_____nothingabouttheargument.
Thenextthinghesanwassmoke_____formbehindthehouse.
一It might be cool to see a film this afternoon. 一Yes,________?