句型转换I don't know when we will start.l ___ _ __ when

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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.

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

句型转换I don't know when we will start.l _____ _____ ____ when l don't know when we will start this afternoon 句型转换l don't know when l should leave I don't know when we shall start.(改为简单句) I don't know ____ _ I don't know when we would start.中would 为什么不能用will I don’t know when we shall start the work. we don't know when ______ (start) I really don't know when I will start my trip=I really don't I don't know when she _____(come),but when she _____(come),I I don’t know when it _____. When it ___ , I _____ some flowe I don't know when he ____,but when he ____,I will let you kn I don't know when I shoud start 同义句转换