Subject-Verb Agreement Flashcard 2

Front

Many people worldwide ________ to have seen such objects.

Back

claim

Front

No one ________ for sure what they are.

Back

knows

Front

They ________ huge plates or saucers.

Back

resemble

Front

People ________ them flying saucers.

Back

called

Front

Since 1947, they ________ been officially called UFOs.

Back

have

Front

The U.S. government ________ investigated many unusual UFO sightings.

Back

has

Front

The U.S. Air Force ________ responsible for conducting these investigations.

Back

were

Front

Government records ________ more than twelve thousand sightings reported between 1948 and 1969.

Back

show

Front

Most reported sightings ________ turned out to be fakes, but others remain unexplained.

Back

have

Front

None of the official reports positively ________ that UFOs come from outer space.

Back

prove