1 . Mr. Smith _______________ in Beijing for 5 years. (现在已不在北京) (根据汉语提示完成句子)

2 . Mr. Smith _______________ in Beijing for 5 years. (现在还在北京住着) (根据汉语提示完成句子)

3 . __________________ is important for us __________________ personally although we have been in touch in various ways.
尽管我们以各种方式保持联系，但亲自见面对我们来说很重要。

4 . In our class there are 50 students, ________________________ (其中一半人戴眼镜) . （定语从句）(根据汉语提示完成句子)

6 . If they take one step further, we ______________________ (将不得不作出相应的反应). (根据汉语提示完成句子)

7 . Can you explain the situation to us ______________________ (直接地)? (根据汉语提示完成句子)

8 . When ____________________________ (按照说明服药), the drug has fewer side effects. (根据汉语提示完成句子)

9 . The generation gap can result in misunderstandings and __________________________________ (引起父母和孩子之间的摩擦)．(根据汉语提示完成句子)

10 . She has been working hard day and night, which of course, ________________________ (是她脸色苍白的原因). (根据汉语提示完成句子)