Chatting online can be ________ fun, but kids must be sure they stay safe on ________ web.
A. /; a B. a; the
C. /; the D. a; a
You made the same mistake for second time, dropping “n” in the word “environment”.
A.a; the B.a; a
C.the; an D.a; an
“Being able to afford drink would be comfort in those tough years.”Grandpa murmured.
A. the, the B. a, a C. a, 不填 D. 不填, a
— What about the party last night?
— It was______ great success. I think it’s _______ great pity that you didn’t attend it.
A./; the B.a;a
C./;a D.a; the
The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9-story building.
A.the；the B.a；a C.a；the D.the；a
Almost________ of the students in this class wear glasses, that is ________of them.
A.two thirds; 60 percent B.two thirds; 60 percents
C.two third; 60 percent D.two thirds; 60 percents
