我认为狗对于一个6岁的小孩子来说是一个好的宠物。

　　I think a dog is a good pet for a _____ ____.

-I feel stressed out. I have so much work to do every day.

-You'd better not work too hard. It's good for you to take some　________　, I think.

A. health B. exercise C. lesson D. work

How many people will come to Beijing for the Olympic Games in 2008?

? 　　　— It’s hard to say. _______ people, I think.

A. Million of?? B. Millions of?? C. Two millions of? D. Two million of

How many people will come to Beijing for the Olympic Games in 2008?
　　　— It’s hard to say. _______ people, I think.

—Mary, could you tell me if your mother ________ our school sports meeting tomorrow?　　

—I think she will come to school if she _________ free.　　

 A. will take part in; will be              B. takes part in; is             

 C. will take part in; is                   D. takes part in; will be