What can you do _____________ home?[ ]
A. on
B. in
C. out
D. at
答案：D
食品保存的方法有
①高温 ②低温③保持干燥 ④保持湿润 ⑤暴露在空气中 ⑥隔绝空气
A．①③
B．①④⑤
C．②④⑥
D．②③⑥
George couldn't remember when he first met Mr. Anderson, but he was sure it was （） Sunday because everybody was at（）church.
A./；the
B.the；/
C.a；/
D./；a
