问题

Bears ______ fat stores throughout the summer and fall to have energy enough to last them through winter sleep.

A:build up
B:pack up
C:bring up
D:take up

正确答案是：

同类题型

Jack, is your mother in—-Sorry, she ___________ Shanghai on business.

She has been ________ over his strange letter for several weeks, but she still figures out nothing about it.[ ]

________ I can see, there is only oneway to solve this problem.

下列句子中加点字词类用法相同的一项是（）

I did very well in theEnglish exam last week —Idid _________ I got a full mark