It’s difficult _____ us to remember new words.

I ________ use a clock to wake me up because at six o’clock each morning the train comes by my house.

The army officer ___ his men to fire as soon as the enemies came up.

It was only 3 hoursthe policeman caught the robber

Oh, Amy! Your English is so excellent.— Thank youYou know, my uncle often helps me with it at home, for he ________ in Australia for ten years.