I have no idea ______ measures the government will take to stop the river from being further polluted. 
#78952
A
which
B
what
C
that
D
whose
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—Excuse me, could you tell me   ? —Two. David will go with me.
#36838
A
who you will go with
B
how many tickets you have booked
C
how many tickets did you book
D
when you are leaving for Hangzhou
Jenny is on holiday now. I wonder ________.
#38562
A
when she will come back
B
when she came back
C
when will she come back
D
when did she come back
You can never know ________ when she received our nice birthday presents.
#79070
A
how Mary was excited
B
how excited Mary was.
C
How excited was Mary
D
Mary was how excited