Frank put the medicine in a top drawer to make sure it would not be _______to the kids.
. _______ the office, the foreign visitors were shown round the teaching building.
With winter _______ on, it's time to buy warm clothes.
Deeply _______, I thanked her again and again.
_______ the house on fire, he dialed 119.
_______ how to do the homework, I went to ask my teacher for help.