If you have time tonight，I’d like to invite you to a ball.　-That’s very nice of you，but are you ____?

It is believed that universities are a place ________ students ________ skills and knowledge, not a factory to produce street vendors.[ ]

Too much pressure from study leads to sleeplessness, which _______ increases the risk of forgetfulness.

I’ll go to the zoo if it ____________tomorrow.

llionaire passed away, leaving hischildren with a large ________