15.▲ such a difficult problem,I really didn’t know what to d
15.▲ such a difficult problem,I really didn’t know what to d
I really a difficult problem.I don't know what __ next
Such a difficult problem__that I don't know what to do with
I really don’t know what to ______ about such a thing.A.say
I really don’t know what to ____about such a thing. A.say B.
We didn't know ______such a difficult problem.
I really don't know what I can do to solve the problem.(同义句改
I really don't know ( ) about it A.what to d
The math problem is so difficult,I don't know __ A how to do
I really don't know how to ___the problem?(处理)
I didn't know how long____ such a
I really don't know ( ).A.what to do the next B.what to do i