Valitse lauseyhteyteen sopiva muoto.

1. a. People are b. It is c. One has been d. They have been estimated that Americans are sitting on $30 billion worth of unredeemed gift cards.
a b c d

2. Unredeemed gift cards? It means that they a. isn't exchanged b. haven't been exchanged c. are exchanged d. can't exchange for money or goods, i.e redeemed.
a b c d

3. The only U.S. president a. been elected b. to elect c. to have been elected d. be elected head of a trade union was Ronald Reagan, former president of the Screen Actors Guild.
a b c d

4. Just like anyone else getting a shot, the arms of condemned prisoners a. are swabbed b. have swabbed c. is swabbed d. are swabbing with alcohol before lethal injection in order to keep the area sterile.
a b c d

5. The dishwasher a. were invented b. have been invented c. had invented d. was invented by Josephine Cochrane— a rich lady who was tired of servants breaking her expensive dishes.
a b c d

6. The phrase "See you next Wednesday" a. is included b. includes c. has included d. are included in most of Director John Landis' films. It was the title of a script he wrote as a teen.
a b c d

7. Wrigley's gum was the first product with a bar code a. to have scanned b. to be scanned c. been scanning d. to scan at a supermarket.
a b c d

8. In Alfred Hitchcock's 1960 thriller Psycho, the sound effects for the famous shower scene a. is actually created b. was actually creating c. are actually being created d. were actually created by repeatedly stabbing a melon.
a b c d

9. Beethoven, Schubert, Dvorak, and Mahler - all of them a. were killed b. was killed c. been killed d. have been killed before completing a tenth symphony.
a b c d

10. We a. were teaching b. have taught c. are taught d. is teaching at school that the tallest mountain in the solar system is on one of the smalles planets: Mars' Olympus Mons, which stands an incredible 15 miles (24 km) tall.
a b c d