I don’t know the reason ________she turned down that offer.
举一反三
- I don’t know the reason ______ he is late.
- The reason ____ I plan to go is ____ she will be disappointed if I don’t
- I don't know the reason _____ he looks unhappy today.
- I don’t know if she is ____________(qualification) for the job.
- He was here for a little while, but I don't know where she ( ) now. He was here for a little while, but I don't know where she ( ) now.