choose the correct answer

1. there_______ a bus station in the city centre, but it has been moved to the suburbs.

a.used to be b.used to have c.use to have d.were

2. all of us have to obey______ strictly.

a.traffic rules b.traffic c.traffic jam d.regular

3. cyclists and motorists have to wear a_______ when they ride a motorbike.

a.hard hat b.cap c.mask d.helmet

4. he forgot to give a_______ before he turned left and got a ticket.

a.signal b.sign c,light d.hand