Read the following text and put the verbs in brackets in the correct tense.
More that 10 percent of motorway deaths (cause) by drivers falling asleep at the wheel. The motorway industry finally (decide) to do something about the problem. Together eith several companies tehy (work) to develop wake-up alarms. The alarms (fit) with a device that (have) the ability to adapt itself to the driving patterns of the driver. When they vary, for example, of the driver (loose) his grip on yhe steering wheel, yhe car (begin) to sway or there is a change in braking pattern, a signal (go) off. There (be) fears, however, that they (give) a false sense of security.