I have _____eraser _____my pencil case.
A:a; in
B:a; at
C:an; in
D:an; at
下列关于地球自转周期的叙述,正确的是( )
⑴____ what when
⑵____ who where
⑶____ whose here
⑷____ white well
⑸____ walk why
⑹____ weather which
某兴趣小组的同学到实验室进行气体性质实验。
古诗云:“黄梅时节家家雨,青草池塘处处蛙。”具有此种天气的的地区是( )