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40. I intended.
A flew
41. I hope you.
A. didn't work
42. What
A.am I doing
43. Alexander Graham Bell was a great
A developer
44. To generate cheap and clean energy, instead of burning fossil fuels, scientists have
developed
A. oil
to New York next month.
B. to fly
- when I arrive at 8 p.m. today!
B. won't be working C. don't work
at the end of year 2020?
C. fly
D. flying
D. are working
D. does I do
who invented the telephone.
D. explorer
B. will I be doing C.do I do
B. conservationist C. scientist
B. solar panels
C. electricity
D. coal burning