4. Раскройте скобки, употребляя глагол в форме Past Simple и Past Continuous в действительном залоге. Обращайте внимание

1. The chief was speaking (Past Continuous) on the phone with his business partner when we came to the office. 2. They signed (Past Simple) a number of contacts last week. 3. Why didn\'t you answer (Past Simple) this letter yesterday? — I was looking (Past Continuous) through the important documents with the chief the whole day. 4. Did you send (Past Simple) the fax to Moscow yesterday? 5. The manager phoned (Past Simple) to the clients and we were discussing (Past Continuous) a new contract the whole morning yesterday.