The children ＿＿very quiet；I wonder what they ＿＿up to.
#104400
A
were； are being
B
are being；are
C
are；do
D
are being；do
推荐题目
—Can I drive on the free way, Mr. Green?—You can when you____________ a bit more skilled.
#104796
A
will get
B
are getting
C
will have got
D
get
Ivy told Nancy that she what she was doing during the vacation.
#101976
A
was just asked
B
was just asking
C
had just been asked
D
had just asked
Unless some extra money________, the theatre will be close.
#99089
A
was found
B
finds
C
is found
D
found
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
All the homework , the students went to see the movie Black Hawk Down.
#103331
A
had been done
B
having been done
C
had done
D
having done