—Tom,where is your father? —I’m not sure.He in his office. （ ）
A.is B.may be C.maybe D.may
_________ exciting activity it is to go bike riding!（ ）
A.What a B.What an C.What D.How
It’s reported that another big oil field was in Shandong.（ ）
A.invented B.discovered C.created D.founded
A boy Zhang Feng made a phone call to you just now. （ ）
A.names B.is called C.called D.is named
—Do you believe that American flags are made China?
—Yes, I do. And you can see they are made silk.
A.in; from B.from; in C.of; in D.in; of
—I find difficult to learn English grammar.
—You can do more English exercises.
A.that B.this C.those D.It
