—I'm trying to keep my cool because we've been together ________ three years．
A：in；in
B：for；in
C：in；for
D：for；for
以下家用电器中，利用电流热效应工作的是（ ）
It's a snowy day. Let's make a snowman. Let's make a big snowball for his ____, and a small snowball for his ____. Let's draw his ____. Let's put two sticks for his ____. Let's put a hat on him. I ____ he's wonderful!
