17.--Where did they do it?
--I am not sure where ________.
A. they did it B. did they do it
C. they do it D. do they do it
16.--What does she want?
--I don't know what ________.
A. does she want B. did she want
C. she wanted D. she wants
15.--What is that thing?
--I don't know what _______.
A.is that thing B.was that thing C.it is D.is it
14.He always thinks of ________ he can work better for the people.
A.what B.which C.why D.how
13.He wanted to know _________ there.
A.how long time I had been B.how long had I been
C.how long time I have been D.how long I had been
12.Ask him ____________.
A. how old he is B. how old is he
C. how old has he D. how old he has
11.--Why is Jack so late?
--I don't know _________be.
what the reason B.what the reason can
C.the reason what can D.what can the reason
10.I wonder ____________.
A.how much cost these shoes B.how much do these shoes cost
C.how much these shoes cost D.how much are these shoes cost
8.She ________ that she lives in London.
A.said B.says C.had said D.was saying
you tell us _____________.
A.who that man is B.who is that man
C.what is that man D.whom that man is
7.Now we have learnt ____________.
A.what is heat B. whether is heat
C. when is heat D. what heat is