___ they decide which college to go to, students should research the admission procedures.A. AsB. WhileC. UntilD. Once
___ they decide which college to go to, students should research the admission procedures.
A. As
B. While
C. Until
D. Once
相关考题：
The police do not allow him to go out of the city without ____.A.permitB.permissionC.admitD.admission
______ it rain tomorrow moring, the loading ______.A.Should / will be postponedB.If / shall be postponedC.Should / would be postponedD.If / has to be postponed
6、两个不同的Web页面（例如，www.mit.edu/research.html及www.mit.edu/students.html)可以通过同一个持久连接发送。