When they came in, Mr Harris＿＿＿＿＿＿like a baby. Nobody would like to wake him from a good dream,because he needed rest. 

Do remember to be________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.

We'll have to wait a ________ two weeks to know the examination result.

Some parents want to shelter their kids from every kind of danger, real or         .

Many rules in English are ______, and large numbers of students feel ______ them.