＿＿＿＿＿box cannot be lifted by a boy of five. 

I's ________ of Bob to do a disappearing act just when there's work to be done!

Many doctors complain that they don’t have ______ working hours, for they have to wait for patients all day long in the hospital.

There is a(n) _______ bus service into the center of town, which makes it much easier for farmers to go to sell their vegetables there.

It may have been unusually cold recently but experts say it's ________ for this time of year.