A、 a, a
B、 an, a
C、 a, an
D、 an, an
答案:C
A、 a, a
B、 an, a
C、 a, an
D、 an, an
答案:C
A. designed
B. designs
C. designing
D. to design
A. an/ the
B. the /the
C. an/an
D. the /an
A. have been built
B. will have been built
C. has been built
D. was built
A. a/The/the
B. a/The/an
C. the/A/an
D. the/A/the
A. at
B. with
C. for
D. to
A. much;little
B. more;less
C. much;less
D. more;least
A. was broken
B. break
C. broke
D. breaking
A. exciting, watch
B. exciting,watched.
C. excited, watched
D. excited,watching