A:宇宙探测器
B:人造卫星
C:航天飞行器
Xiao Li was supposed __________ her homework before nine o'clock. But she couldn't.
解释下列词语
①忠诚爱国 ②大声呼唤
注意: 1)字数 100 左右;
2)可以适当增加细节,使文章行文连贯。
Dear Sir/Madam,