【单选题】薄壁零件精加工日,最好应用( )装夹工件,可以避免内孔变形。
【单选题】They didn’t find ________the medicine.
A.
what’s the matter with
B.
what was the matter with
C.
what the matter was with
D.
what the matter is with
【单选题】-- ? --I have a sore throat.
C.
What’s matter with you
【单选题】— ? — I have a headache.