The boy spent as much time playing video games as he ____ studying.

Would you be kind enough to help the boy _____ Chinese is really hard to learn?

Miss Pei is on time for everything. How ______ it be ______ she was late for the opening ceremony?

With the help of the foreign experts, they produced ___ washing machines in 2003 as the year before.

Neil_______ in Xiamen for five years before he finally decided to go back toScotland