Put the verbs in brackets in the correct tenses.
34. The four planets closest to the sun – Mercury, Venus, Earth, and Mars - (be) ____________called the terrestrial planets because they have solid, rocky surfaces.
35. Our grandparents (come)____________ to stay with us next weekend.
36. People (wonder) ____________ for ages whether we are alone in the universe.
37. This time next week, we (take)___________ an English test.
38. By the end of this year, I (learn) ____________ English for 6 years.
39. By the end of this century, scientists (discover) ___________ intelligent life.
40. Beagle 2 - the first British spaceship to Mars - (look for)_____________signs of aliens this time next month.
41. Astronauts (travel) _____________ to planets outside our solar system by 2050.
42. I expect your English (improve) __________ a lot by the time you got back from England.
43. NASA (develop)___________ new aircraft to replace space shuttles by the end of this decade.
34 are
35 are going to come
36 have wondered
37 will be taking
38 will have learned
39, will have discovered
40 is going to look for
41 will be traveling
42 to be improved
43 will be developing
1 are
2 are coming
3 have wondered
4 will be taking
5 will have learnt
6 will have discovered
7 will be looking for
8 will have traveled
9 had been improved
10 will have developed
