Large quantities of information as well as some timely help ___________ since the organization was built

My parents will buy a piano for me if I _____ good grades in the tests.

_________ either he or I to host Talent Show in our school this year? — I have no idea, either.

The teacher spoke loudly _________ make the students hear him clearly.

While _________the topic of music in class, all the students show great interest in it.