Hardly_________the phoneI was told that the hotel had been booked full．

There are quite a few trees in the forest .

It’s ___________ /’nes?s?r?/ for us to help parents do chores on weekends.

In the past few years, so many areas throughout the world have been hit by such destructive earthquakes, snowstorms and tsunamis ________ we have never experienced before, ________ makes us worried a lot about nature disasters.

Who cleaned the blackboard yesterday, Dick?—John ____.