在珍惜青春方面下列做法正确的是 ①树立奉献意识 ②上网聊天一聊半天 ③勤奋学习,掌握知识,提高技能 ④在家中、在学校里、在社会上努力做有益他人、社会的事
Mark isn't coming to the concert ______ he has got too much work to do.
The girl is very friendly. She often ______ at me when I see her.
----______ do you need, Madam? ----Some chicken, please.
A journey by train is more ______than by coach.
If you want to speak English well, it’s better to join an English ______.