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12. In the last two decades, space exploration_
contributions to weather forecasting.
b. has made
a. is making
c. made
d. makes
down
On July 20, 1969, Neil Armstrong
onto the moon, the first person ever set foot on another
planet.
13.
14.
15.
16.
17.
18.
19.
20.
a. was stepping b. stepped c. has stepped d.
was step
When boarding the plane,
annoyed because they
three ad a half hours.
b. were
Their football team
a. are
c. have been
d. had been
If coastal erosion continues to take place at the
present rate, in another fifty years this beach
any more.
a. doesn't exist b. isn't going to exits
existing
d. won't be existing
last season.
a. had never won
many passengers were
waiting in the airport for
b. is never winning
never been winning d. had never won
By the end of this year, Tom
They
a. have finished
finish
a championship until
c. had
English for
three years.
a. will be studying b. has studied
d. has been studying
studied
In one year's time, I
great
years.
a. will be working b. will work
studied d. has been studying'
this course by next June.
b. will finish
in this school for 15
c. isn't
d. will have finished
She will go abroad as soon as she
English course.
a. has completed b. will complete
completed d. completed
c. will have
c. will have
c. are going to
this
c. will have