He has a lot of innovative ideas for solving the traffic ___________he cannot implement them without the government's support.

If you really struggle for creative ideas________look on the internet and in books until you feel inspired.

The lecture was very dull and the visual aids were uninterestingly presented________the students left the conference hall.

The country cannot forever depend on oil as a source of energy because it is becoming expensive________it causes pollution.

________he’s very smart, he cannot pass his English class.