YDS YARIM CÜMLE / TEST 4 29. Soru

Bu Testin Birincisi Daisy41

100 %

29.

- ----, but scientists have been tracking avian
influenza for five years.

There were very few people who had been
unaware of the research

Most people had been warned of the
danger

The longer the virus is allowed to circulate
among birds

Many of them had been working on the
virus

It may be news to many