__________ he is old, the old man still insists on studying at a night school

I won’t tell the student the answer to the math problem until heon it for more than an hour

There is________on smoking in this theatre.-Do you mean smoking________in this theatre? [ ]

I will go for a picnic with my friends on Sunday ________ it rains.[ ]

He’s never heard to sing a pop song so loudly,_____ he— ___________. He is so shy.