Give the correct form of the word in each of the following brackets.(1.5 pt)

It was not so long ago that we dealt with colleagues through face-to-face (1. INTERACT) ______ and with counterparts and customers by phone or letter. But the world of communication has undergone a dramatic transformation, not for all the good. Email, while (2. DOUBT) _____ a swift means of communication providing your server is fully (3.FUNCTION) ______ and that the address you have contains no (4. ACCURATE) _____ has had a (5. SIGNIFY) _____ effect on certain people’s behaviour, both at home and business. For those people, the use of email has become irresistibly (6. ADDICT) _____ to the extent that it is (7. THREAT) _____ their mental and physical health. Addicts spend their day (8. COMPULSION) _____ checking for email and have a (9. TEND) ______ to panic if their server goes down. It is estimated that one in six people spend four hours a day sending and receiving messages, the equivalent to more than two working days a week. The negative effect on (10. PRODUCE) ________ is something employers are well aware of.