She wrote a month ago, ______ we’ve heard nothing. 
#73446
A
since when
B
before which
C
since that
D
after which
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We would like to drop in at your house if ___________     
#69786
A
you are convenient
B
it is convenient of you
C
it is convenient to you
D
you will be convenient
. The book, _______ is blue, is mine.
#70196
A
the cover of which
B
whose cover
C
of which the cover
D
all the above
. Could ______ be in the restaurant ______ you lost your handbag?
#70202
A
it; which
B
it; that
C
that; that
D
that; where