Помогите вставить правильный глагол1) The engineers ... a new equipment in the office tomorrow.а) will install б) install в) installed г) have installed2) The engineers ... the new equipment for three days.а) have been installing б) installed в) install г) had installed3) A new laboratory ... last year/а) were opened б) was opened в) opened г) had opened4) I ... at the important project when the telephone rang.а) worked б) had worked в) have been working г) was working5) The new computer system ... at the moment.а) is installed б) are installed в) is installing г) is being installing6) Every material ... some resistance to the flow of an electric current through it.а) is offering б) offered в) offers г) is being offered7) The device ... the frequency of electromagnetic waves.а) had calculated б) has calculated в) is calculated г) was calculated8) A noise ... by the buzzer.а) is being made б) makes в) made г) has made9) The first integrated circuits ... during the early 1960s.а) are made б) were made в) made г) make10) Immediately after the First World War, electronic ... a push that then gained strength.а) was receiving б) is received в) received г) has received11) The ammeter ... to measure the current.а) uses б) will used в) used г) is used12) The receiver ... recently to illustrate the principle of molecular electronics.а) developed б) develops в) has developed г) was developed13) America ... the Moon surface during the 1960s.а) gains б) was gained в) gained г) is gained14) The student ... this experiment yesterday at 5 oclock.а) is carrying out б) was carrying out в) has been carrying out г) had been carrying out15) By the end of the year a large variety of semiconductor devices ... .а) will have been produced б) will produce в) are produced г) are being produced16) One ... always take safety precautions.а) should б) may в) have г) is17) A small change in the signal ... to produce a large change in the plate current.а) can б) may в) is able г) have

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