Completing Statements - General Questions

but hard-working also not.

or hard-working.

and also hard-working.

but also hard-working.

we reached the airport on time.

we missed the flight because of traffic.

so we reached late.

therefore the traffic was heavy.

he finished the project easily.

so he finished the project.

because he finished the project.

he could not finish the project on time.

she failed the examination.

she could pass the examination.

the examination was cancelled.

she did not study.

although we went in.

we went to another one.

unless it opened.

we bought everything there.