________ a difficult situation, so you should send hima message and give him some advice.

They have already_______ themselves for the travel.

n is naughty, talkative,casual, but _____, his classmates think he is not so tiresome

The water in the ocean also keeps the temperature of the earth steady by absorbing and _____heat.

The news inspired the whole world______ Israeli scientists have invented a kind of magic glasses_________ can let the blind see things.