To keep fit, we should ______ a healthy eating habit. [ ]

I don’t know if it _____ tomorrow. If it _______, I will stay at home.

.When _____ my childhood, I get lost in happy memories of times now gone forever.

Neither the students nor their teacher _______ the solution to the problem.

What did David demand in the meeting just now—________ a chance to join the Debating Club.