1、Both rice and wheat ________ grown in our country
A.is
B.are
C.was
D.were
2、What’s the best present you have ever ________?
A.received
B.receives
C.receiving
D.receive
3、The old couple decided to _______ a boy though they had three of their own
A.adapt
B.bring
C.receive
D.adopt
4、The population of the world is growing at a dangerous _______
A.rate
B.pace
C.measure
D.progress
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