North Korea threatens to ________ from six-party talks aimed at ending North Korea's nuclear program unless its proper rights are to be satisfied．
#100685
A
escape
B
flee
C
withdraw
D
retire
推荐题目
When I came into the teacher’s office, he ________ on the phone.
#101238
A
was speaking
B
spoke
C
had been speaking
D
had spoken
—Has Billy finished his homework today?—I have no idea.He it this morning.
#104538
A
would do
B
was doing
C
has done
D
had done
This coastal area a national wildlife reserve last year.
#101933
A
names
B
named
C
is named
D
was named
Egg prices usually ________ in spring when they are most plentiful.
#99486
A
are dropping
B
drop
C
have dropped
D
will drop
I have to see the doctor because I a lot lately.
#102282
A
have been coughing
B
had coughed
C
coughed
D
cough