用括号内的词的适当形式填空。
（1）How much _________ (be）the glasses?  They _________ (be）$ 15.
（2）Which is _____________ (big), the bear or the panda? The bear is.
（3）I like ____________ (swim）very much. I usually __________ every day.
（4）___________ (be）you good at ______________ (ice-skate)? No, I’m not.
（5）How often does Jenny go hiking? She __________（go）hiking once a month.
（6）I’m ____________ (go）to get two _______________ (box）of tissues.