1．-What do you want to be in the future, Lucy?
-I want to be _____ pilot. It is _____exciting job.
A. a; a B. a; an the D. the; an
2．Mary was born in 1998 and she began to play _______ guitar at the age of seven.
A.a B.不填 C.the
3．The house is very nice. Has it got ________ garden?
A. / B. a C. an D. the
4．This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
A. aB. anC. theD. /
5．What do you usually have for________ breakfast?