“Can you go hiking with us this Sunday” “Sorry , ________”

Could I ask you some personal questions —

下列各句中，加横线成语运用正确的一项是 （ ）

Excuse me, how do you __________ “basketball”—B-A-S-K-E-T-B-A-L-L.

The boy lay on his back, with histeeth______, his right hand_______, and his glaring eyes ________ _straightupward.