--- Did Peter come to school last week?--- No, I didn’t know ___________.
There’s too much noise outside. _________ of us two can fall asleep.
Our teacher asked us to write a _________ letter in English this morning.
Thanks to those brave firemen,the big fire was soon.
A report says the temperature on the earth now is much higher than _______ in the past.
My uncle _________ drive a car two years ago. Now he drives very well.