He is not the kind of person that ______ in the comedy. In life, he is serious and conserved(保守).[ ]

I was still sleeping when the fire ___________, and then it spread quickly.

It’s very dangerous to be _____ to the virus without any protection. [ ]

I haven’t got the reference book yet, but I’ll have a test on the subject next month. — Don’t worry. You _______ have it by Friday.

Do you know the young man well—Sure, we __________ friends since we met in Nanjing three years ago.