-----What’s the population_______the U.S.A.? ----- the U.S.A.has _______population of 297 million.A. of, a B. of, / C. in, a D.in, /
Does Li Lei’s sister _______ a ping-pong bat?
Look! Here are ____________ .
—Are these English books? — Yes, ______ are .
Here is ______ English book. _____ book is Lucy’s.
—Hello,__________. — Hi, Lucy.