句型转换Idon'tknowwhenwewillstart.lwhenwewillstart.ldidn'tcatchthefirstbusthismorning.lcatchthefirstbusthismorning.lcatchthefirstbusthismorning.Wedidn'tneedchemistry

Question

句型转换
I don't know when we will start.
l _____ _____ ____ when we will start.
l didn't catch the first bus this morning.
l _____ _____ _____ catch the first bus this morning.
l _____ _____ catch the first bus this morning.
We didn't need chemistry teachers last tern.
we were _____ _____ ______ of chemistry teachers last tern.
Mary's brother has stopped smoking.
Mary's brother has ____ ____ smoking.
We haven't decided where to have the meeting.
We haven't decided ______ the _____ tohave the meeting.
l will say sorry to Mr.Lee for being late.
l will ____ ______ Mr.Lee for being late .
Since everyone is here,let's begin our class.
_____ ______ everyone is here,let's begin our class.

Answer 1

am not sure
was unable to
did not
without the guidance
refrained from
on place
apologize to
Now that