None
None
None
replace
replace
An "examination hell" is the nickname given to the exams you have to take in Japan all at once. That's why this is exam hell.
This is a jukugo word that smooshes two previous vocabulary words together into a new one. You should be able to read this on your own.
試験地獄に苦しむ日本の学生にとっては、電車で勉強するのは当たり前のことです。
Studying on the train is common for Japanese students who suffer from exam hell.
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up whatever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.