Is that book so boring—- ______________. You can know a lot about birds.

Did you listen to the report last Friday?— Yes, it was about the shortage of migrant workersThat was the first time I______ about the subject

Three fourths of the ________ in the country have runout.

Scientific experiments __________ by students without the teachers’ instructions can be dangerous

The walletseveral days ago was found___in the rubbish[ ]