His writing is so confusing that it's difficult to make out ________ it is he is trying to express.(2011·安徽，33)
#78806
A
that
B
how
C
who
D
what
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The students asked me going to be held.
#79173
A
when is the party
B
when the party was
C
when the party is
D
when was the party
If you don’t know ________ the new robot toy, you’d better read the instructions first.
#38442
A
where to mend
B
how to make
C
how to use
D
where to buy
His writing is so confusing that it's difficult to make out ________ it is he is trying to express.(2011·安徽)
#78803
A
that
B
how
C
who
D
what
They give the available seats to comes first. After all, the early bird catches the worm.
#79138
A
whom
B
who
C
whomever
D
whoever