数字电视为市民提供了比模拟电视更丰富的节目和信息内容、更高的服务质量。5月18日发布的《2009年中国广播电影电视发展报告》透露,去年全国有线广播电视用户达到1.64亿户,其中,数字电视用户4527.86万户。观看数字电视节目之所以要付费,是因为 ( )
---The excellent student is said ________in Germany last year . --- No wonder he has a good command of German .
----_______an earthquake happens in Quanzhou when we are having a lesson ? ---- I’m afraid most of us will be trapped.
Think twice and time will _____what you have chosen is right or not .
How _____ you say that you have made great progress since there are so many mistakes in your test paper ?
The alarm clock ______it was time for me to get up went off , _______my good dream .