---Do you know ______ after Japanese earthquake and tsunami（海啸）?
--- Sure. For three weeks.
A. when did the dog float(漂浮) on the sea
B. when the dog floated on the sea
C. how long did the dog float on the sea
D. how long the dog floated on the sea
--_______ beautiful day it is! Let’s go climbing today! ---Good idea!
A. How B. How a C. What D. What a
---________ do you water these flowers? --- Once a week.
A. How soon B. How often C. How long D. How much
---Don’t _______ your hope. Everything will be better.
---Thank you. I’ll try my best.
A. give up B. cheer up C. fix up D. put up
---I am _______ before the examination. --- Don’t worry. I’m sure you can pass it.
A. quiet B. shy C. confident D. nervous
---How is the weather in Xiamen? ---Oh, it’s very hot ________ summer.
A. on B. at C. in D. by
