Yang Ling is good __ _English, but she _____not do well in PE.
A. at; do B. at; does
This is not my bag.is over there.
A. My B. Mine C. I
I have two storybooks, but Helen ______ four.
A .has B. have C. had
David is playing ______ basketball .
A .a B. the C. \
--Hello, is that Liu Tao? --Yes, ______.
A .I am B. it is C. speaking