39. –Did you _____ your sister when you were in Shanghai?--No. But I _____ my uncle’s during my stay there.
The reason ______he was late for class was not the reason ______he gave me.
She heard a terrible noise,______brought her heart into her mouth.
I have an itch ____ writing.
_____ the lab, we were taken to see the library.
I am busy preparing for the mid-term examination, so I can’t help____ housework.