The English teacher told us this morning that we _____ an exam at the end of this month.
–How much salt did you put in the soup?--I’m sorry to say, _________. I forgot.
Helen ________ her keys in the office so she had to wait until her husband ______ home.
People in Tianjin are proud of ______ they have achieved in the past few years.
Bears often hide themselves in places __________ can’t be found by hunters.
There were dirty marks on her trousers _______ she had wiped her hands.