Selecting a mobile phone for personal use is no easy task because technology so rapidly.

We haven’t settled the question of ______________ it is necessary for him to study abroad.

I was ten _________ late for school this morning because of the traffic jam.

Can your brother a car—Yes, and he to work every day.

(2009安徽合肥质检) She was so angry at all ______ I was doing ______ she walked out