I'm sorry about yesterday．
Don't worry about it． It's never just one person's fault． We should think about ______better next time．（ ）
A．how can we do itB．how we can do it
C．how can they do itD．how they can do it
I______sleep very well， but then I started doing yoga and it really helps．（ ）
A．didn't use toB．used to
C．was used toD．wasn't used to
﹣Don't keep the lights on when they're not in use!
﹣____（ ）
A．Not at all．B．Sorry， I won't．
C．No， thanks．D．I'm afraid so．
You haven't eaten all day． You___be very hungry．（ ）
A．couldn't beB．can't
C．mightD．must
﹣Do you know______________？
﹣Sorry， I've never had an e﹣book before． Why not read the instructions first？（ ）
A．how can I turn the e﹣book on
B．how I can turn the e﹣book on
C．where can I buy an e﹣book
D．where I can buy an e﹣book
I want a mobile phone which____good pictures．（ ）
A．tookB．is takingC．takesD．take