一Is Mary from New York City?
--I don’t know________．

The researchers, from the Graduate Center of the City University of New York, sa

[单选题]—Don't try to anything from me,Mary.—I know nothing about it,mum! I was sleeping at that time!A．hear B.cheat C.get D.hide

My daughter and I took a tour around New York City()A. two dayB. two day'sC. two

[单选题]John: Mary isn't going to New York next week.Rose: ______

[单选题]（ ）I don’t know __________.A．how often he visits his grandparentsB．how soon will he come backC．how many students are there in his classD．how long is the bridge

I don’t know ( ).A. what does this word meanB. what this word meansC. what kind

I don’t know the reason ______ you were absent from the meeting, but I am sure t

[单选题]I don't know ________.A.who were theyB.who they areC.who are theyD.who they

[单选题]I don’t know ______ to deal with such matter.A.whatB.howC.whichD./

I really dont knowA. where to chooseB. which to chooseC. to choose whatD. to cho