It's very important ______ us ______ hard.
A:for; to study
B:of; to studying
C:for; studying
D:of; to study
关于地球公转的叙述,正确的是( )
下图为赣江某河段示意图。M地有沙山、沙洲面积约13万亩。读沙山景观图完成以下问题。
选择合适的短语填空。
give concerts,dance music,all over Europe,the capital city of,in the eighteenth century