Look! Mary____doing____homework.
A. is;one's
B. is;her
C. are;his
D. are;her
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The children are____
A. watch
B. seeing
C. watching
D. reading
Are the boys looking at the blackboard? Yes,they____.
A. aren't
B. do
C. don't
D. are
There's____girl,she is very tall.
A. second
B. two
C. a second
D. all second
--Do you have a red pen?Which of the following is wrong?____.
A. Yes; I have one
B. Yes,I have it
C. Yes,I do
D. Sorry,I don't