He took off his expensive watch ____ the fact that he was rich.( )
to hide
hid
hide
hidden
﹣﹣﹣What's twenty and fifty?
﹣﹣﹣It's ____________________.( )
fifty
seventy
eighty
ninety
If the weather is nice,we could have a( n)___________ in the park.( )
picnic
chance
place
idea
Jim started to play ___________ violin when he was five.( )
a
an
the
/
单词辨音( )
chair
su ch
mu ch
s chool
both
la b
com b
box