单项选择题
The fact______ English and computers are becoming more and more important in our daily life is known to us all.
单项选择题 The building______ by the end of next year will be used as our teaching block.
单项选择题 ______we have done too much for the chance to come here, we must work hard.
单项选择题 I don't believe that your sister can speak two foreign languages,______
