He started to learn English in 1990 and in the years ________ he kept on using it in his work.
In my opinion, some of the news _____ unbelievable.
Joy and Sorrow _____ next-door neighbours.
Ten minutes ______ a long time for one who waits.
E-mail, as well as telephones, ________ an important part in daily communication.
_____ you ready?