1. Sergio to England in 2004, and he there ever since

A) has been expected / were preparing
B) will be expected / prepare
C) is expected / have been preparing
D) is being expected / are preparing



16. I hope that you......what you are looking for by the time I.......
A) have found / will return
B) will have found / return
C) will find / returned
D) found / am returning



17. Nowadays, it......that the Vikings .... the Americas about 500 years before Columbus' arrival there in 1492.
A) has believed / were reached
B) is believed / had reached
C) believed / have been reaching
D) has been believed / reached



18. Fortunately, he......by a construction worker as he......, and so they rescued him immediately.
A) has been noticed / fell
B) was noticing / has fallen
C) was noticed / was falling
D) would be noticed / had fallen



19. Ever since she started attending evening courses, Linda......as much yoga as she.......
A) isn't doing / has been
B) wasn't doing / should
C) hasn't been able to do / used to
D) doesn't do / would like



20. Sandy ...... on her car all day long—I wonder if she......by this evening.
A) works / is going to finish
B) worked / was finishing
C) is going to work / has finished
D) has been working / will have finished