16. Mary answered all the questions _____ the last one, which she had never heard of before.
The old woman has loved Tom _____ he were her son.
She heard a terrible noise, ___brought her heart into her mouth.
They agreed to rent the house ______ the roof should be repaired.
The reason ___he didn’t come was ____he was injured.
Mother shut the window ______ she might keep the insects out.