用所给词的适当形式填空

（1）What about ____ (eat) some fish for supper?

（2）Sam is an ____ (England) boy.

（3）He can finish ____ (read) the book this week.

（4）What ____ he often ____ (do) after school?

（5）This is my cat. Do you know ____ (it) name?

NH₄NO₃ 是一种化学肥料，某NH₄NO₃溶液的 pH=5，以下说法正确的是（   ）